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20 Gallon Tank given

4K views 35 replies 6 participants last post by  Trey740 
#1 ·
Okay, so a friend recently gave me his old 20 gallon tank. After wiping it down and cleaning it out, I have bought some substrate (gravel and sand, I did gravel in 70% of tank and sand in other 30%) I also bought some plants at the store today by the name of Cocomba.

I am going to do the fish-less cycle as this appears to be my best option. I have a filter and heater that I will be using as well as planting the plants throughout my tank.

My only quesiton is should I use some of the artificial plants from my other tanks to speed up the process with my new tank or could I possibly take another decoration?

Also, I would like to know some stocking options? I seen a dragonfish today at the pet store and I REALLY liked it. If any one has experience with them and fish that go good with them, I would appreciate it.

p.s: I want to stay away from guppy and gourami as I already have those in other tanks. Thanks
 
#3 ·
By dragonfish I think you might mean a bichir or a dragon/violet goby? If so I'm sorry to say but they both get too big (up to two feet long!) to be safely housed in a 20 :( They really should have a larger tanks (thinking around 55-150), even when young.

Can you post the dimensions of the tank? 20 gallons come in three different sizes, and that changes possible stocking plans a bit.

We also need to know the gh, kh, and ph of your water to suggest suitable fish for you. You can usually find this information online from your water supplier/city website.
 
#4 ·
Perhaps the plants are Cabomba?

I was all set to start with a fishless cycle until I realized the benefit of plants... add substrate, water, plants and first group of fish within days. This does require enough plants and fast growers are best. Skip the artificial plants unless you feel that you need a little bacterial help initially, it can't hurt but may be unnecessary.

Jeff.
 
#5 ·
Yeah the plants are cabomba, that was my mistake on the misspelling. My tap water is around 120-180 ppm gH and about the same for kH. My pH for my water is around 7 - 7.5.

And that is bad news about the dragon goby (that is what I seen). I really liked that thing. I was hoping to find a cichlid that I could house in my 20 gallon, because I like the way they look and they are a little more aggressive which is what I want.

The tank dimensions are 16 inches high, 24 inches long, and 12 inches wide.
 
#6 ·
I'm looking for opinions. I have a 20 gallon high tank. I planted the tank with Cabomba with sand and gravel substrate and I plan on getting a floating plant later in the week to add as well. My tap water is rather hard, around 160-180 ppm and the pH stays at or around 7.5. I have a Tetra Whisper 20 gallon filter as well as a heater. I will be placing an air stone in the near future.

At the moment, I have a 10 gallon tank that is a little overstocked so I plan on moving 3 of my guppy (one male and two female) to this tank. I was wondering peoples opinions on other fish to add. The gravel takes up about 70% of the tank and the rest of the tank is 30% sand. I want a different bottom feeder than a cory if I can find one that can fit in the tank. I really want something that looks cool at the bottom. I also want some other fish that can go with my 3 guppy that I will be adding.

Any opinions or options will be greatly appreciated.
 
#7 ·
I've also thought of moving all six of my guppy to the 20 gallon and adding different fish to my 10 gallon. (It also has 5 cory (I know the 10 gallon tank is overstocked with 6 guppy and 5 cory, but the water is clean and levels always stay great)(also why I want to move the guppy or maybe even the cory or just leave them alone and just add to the 20 gallon.

I am stuck on what I want to do.
 
#8 ·
For an interesting substrate fish, look at the Whiptail Catfish. Click the name for the profile. Make sure it is the common one, species Rineloricaria parva, as there are similar-looking fish that may be labelled "whiptail" that get much larger and can eat plants. This little one doesn't. There is also the "red" variety, in our profiles as Red Lizard Whiptail. These should manage in your water. Corys are fine with them too.

Byron.
 
#9 ·
Are there any cichlids at all that can fit in a 20 gallon high tank? Even if it is the only fish in there, I don't know why but I am completely fascinated with them. I wish I had space for a 55 gallon but I just don't right now. But I would love to have a cichlid and other fish but I know cichlid are tough to keep in a 20 gallon.

Water parameters are gH: 160 ppm and pH around 7.5. Temperature is about 76.
 
#10 ·
The length of the tank, because it is a 20 gallon tall, is limiting somewhat but the cockatoo dwarf cichlid is a close match... pH is near the top of its range, temperature would have to come up a bit. There is a difference between wild caught and tank raised but you can just check with the store which they are. I looked at these initially but my water is far to hard for them.

Jeff.
 
#11 ·
That is a beautiful fish. Full of color which I feel would look good. Unfortunately, the fish store that I will be getting fish from does not appear to have them. I feel like after reading their profile that they would fit well in my tank, with my tank being 24" long I would be able to have one male and two female.

Are there any other cichlid that fall into this same size category?
 
#13 ·
Always ask as sometimes they will bring in stuff. They just order what sells, I get that, but if one person shows an interest in a particular fish, they might consider bringing them in.

I got emerald catfish this way, and have a standing order for red lizard whiptail catfish that, if they are expensive (means not as easy to sell) they will call me before ordering them.

Jeff.
 
#12 · (Edited)
Yes, I was thinking one of the dwarf cichlids in Apistogramma, but most will be wild caught and thus require very soft water. A. cacatuoides is possible, though this is a harem fish and one male with 2-3 females; on reflection, this should work in a planted tank, lots of bits of wood and plants.

There are the "shellies" from Lake Tanganyika. But most other cichlids need more space (or different water for the dwarfs from SA).

Byron.
 
#14 ·
I haven't decided what I want yet. I like the cockatoo dwarf cichlid. I may have to unfortunately go away from cichlids as I just can't decide on something nor do I want to push the limits of the fish that I will be putting in the tank.

I was just going for a different style of fish that has color and personality that would swim around my 20g. Cichlids were my choice because I have a friend who has them and he loves them. I would be okay with going for another style of fish whether it be a schooling fish or not. I want color in the tank. I may try to find a cockatoo cichlid at the fish store but if not I will ask them (going to Aquarium Adventure, a fish store in Columbus, OH that I feel is knowledgable about fish) and see what they suggest.
 
#15 ·
I haven't decided what I want yet. I like the cockatoo dwarf cichlid. I may have to unfortunately go away from cichlids as I just can't decide on something nor do I want to push the limits of the fish that I will be putting in the tank.

I was just going for a different style of fish that has color and personality that would swim around my 20g. Cichlids were my choice because I have a friend who has them and he loves them. I would be okay with going for another style of fish whether it be a schooling fish or not. I want color in the tank. I may try to find a cockatoo cichlid at the fish store but if not I will ask them (going to Aquarium Adventure, a fish store in Columbus, OH that I feel is knowledgable about fish) and see what they suggest.
If I may offer a suggestion to help avoid trouble down the road...look around, at fish in a good store, at our profiles...find fish you like, then learn about them...back to the profiles again. Believe me, this is the only way to success without harming fish along the way. There are lots of options, too many to list; but not everything works together, so it takes some careful thought and planning.:)
 
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#16 ·
Given your hardness and Ph I don't recommend Apistogramma species at all. They might be able to survive at your levels but wouldn't be happy.

You could look at some of the African dwarfs, Pelvicachromis species for example, that show lots of color and would be interesting to keep. Some of them are now becoming at risk too because of destruction of habitat and on-going fighting so you would be doing your bit to help conserve the species too.

Trevor
 
#17 ·
I just wanted to update, I decided to go with some live plants, planted and floating, as well as 3 serpae tetra, 3 espei rasbora and one german blue ram. AQ advisor said that the ram would be too aggressive to go along with my rasbora, but they have been together for about 5 or so days with no signs of anything wrong. I added the ram last after my tank had been running for about a month or more ( I waited until my ammonia and nitrite both read a little and then both dropped to zero. I think adding the live plants and other things from one of my cycled tanks really helped the process. All the fish are doing great.

I read that the ram would be a picky eater which could cause him to have problems, but so far when ever I put food in the tank, he seems to eat quite well. He is constantly going around the tank picking at the plants and other things around the tank. I am very pleased with him and I am going to wait a couple weeks and if he is still doing good, I would like to get a female to go along with him (the people at my fish store as well as online said he would be much better with a female companion).

I just wanted to update and see if anyone had any thoughts on my setup?

(I have a Tetra 20 gallon filter and I just bought a sponge filter that I am putting in there that will arrive tomorrow. Also, I have quite a few snails in my tank now that have really helped keep in clean.)
 
#18 ·
Good go on planting it... going to need some pictures, eh?

What temperature are you keeping the tank at? The rams are 80F+ fish.

You will want to up the tetra and rasbora groups to at least 6 each, they fair much better in groups. If you are adding one more ram for a pair and bringing the other groups up the tank will be a tight fit.

It's not so much a matter of seeing that nothing appears wrong in the very short term (5 days is very short) it's seeing that everything is right over the long term and being prepared to deal with issues that may end up not being correctable while trying to maintain the status quo with regards to tank stocking.

Jeff.
 
#19 ·
The rasbora and ram are not the problem (or shouldn't be), but you may have trouble with the Serpae Tetra. They can be nasty; read the profile.
 
#20 ·
My thought process is that I would like to add more serpae tetra, probably 3 more. I would like to add one more ram as well. As far as the rasbora go, I may leave them where they are at 3, and see how they go. That will be the extent of the fish. I would not have a problem getting rid of the rasbora, but as of now, things are okay and I want to see how they go.

I am keeping the tank at 81 degree. I have seen that rasbora would be good with this temperature, and it may be on the high end for tetra, but I keep most of my tanks a little high temperature wise.

As far as plants go, I am going to the store tomorrow to get a couple more plants to add, as the cabomba I have I don't really like now that I have them in my tank. I will probably keep some, but I would like to add different plants.
 
#21 ·
I did read that the tetra can be a little aggressive, especially at feeding time. But what I have read is that they are more aggressive toward each other than other fish (unless the fish have long fins like guppy or betta). I will keep an eye on this and see how things go, but they have been with the rasbora for a while and seem to be fine.
 
#22 ·
The Serpae aggression is toward each other if there are enough of them. I had five in a tank and took them back just last week. They've been in the tank for a long time (office tank, I had nothing to do with it until recently) and they all but ate a cory that was in there.

Given the choice, I would return the serpae and keep the rasbora and add to their numbers. 20 gallons is not a lot of space.

I have a betta so I did a lot of researching into what fish work well together and went with very community type of fish (other than the betta obviously, it pre-existed the first tank though) in my first tank and I am doing the same thing in my second. The main reason is that I feel there is enough in keeping fish in healthy environments that I don't need to add possible aggression and stress that arises out of even slightly mis-matched fish.

At least some things should be easy.

Jeff.
 
#23 ·
Fair enough. Are there any other tetra that would be similar to the serpae (size and overall shape) that would fair well without the aggression? I really like the look of the serpae tetra and wanted to get more, but if it will cause problems with my ram (which is the fish that I want to base my tank off of) then I would get rid of them.

I mainly got the tetra and rasbora because my fish store told me that they would be good to add during the cycle because they would be hardy enough to withstand the water.
 
#24 ·
Fair enough. Are there any other tetra that would be similar to the serpae (size and overall shape) that would fair well without the aggression? I really like the look of the serpae tetra and wanted to get more, but if it will cause problems with my ram (which is the fish that I want to base my tank off of) then I would get rid of them.

I mainly got the tetra and rasbora because my fish store told me that they would be good to add during the cycle because they would be hardy enough to withstand the water.
It is unfortunate that the Serpae is so pretty, and so readily available, because it is not really a good community fish except when it can be provided the numbers (at least 8 in the group, or more is better) and the space (a 30g tank for a group of this species could be a stunning display). In larger tanks it can live reasonably peacefully (in a large group) with other fish, except never long-finned or sedate species. Check the profile.

The rasbora needs more, but it is a lovely and peaceful fish. With this species, I wold have no less than 7, so to your 3 add another 4 or 5.

There are many other compatible species, have a look through the tetra in the characids profile area
Characid Species. They are listed in alpha order by scientific name, but if you hover the cursor over each the common name shows up. But that won't mean much either, so click the post to see the photos at the bottom, and the data above. Minimum numbers, minimum tank size, compatibility are all included for each.

You might want to look at the Red Phantom, Rosy, Flame or Robert's Tetra, for some red, or the Lemon for yellow (nice contrast with the ram and rasbora). Just check temps, I can't remember off the top of my head, and as Jeff mentioned earlier, the ram needs higher temps than some of these will appreciate.
 
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#25 ·
Thanks, Byron. My thing with the serpae tetra is that they have an almost orange look to them. I actually have the neon serpae tetra (at least thats what they were listed as at the store). They have an almost orange look to them, and orange happens to by my favorite color. My rasbora do have a very beautiful orange on them. As much as I would hate to say it (because I love my tetra) I may have to step away from tetra altogether because I just can't find any that really stand out to me like the serpae. I'm going to look for some other fish that go well with my blue ram and go from there. thank you and JDM for everything!
 
#26 ·
One option, and probably a good one as this is only a 20g tank, is to increase the rasbora to 12, along with the pair of rams, and then perhaps add some substrate fish, keeping in mind the temperature (some won't survive).

Just keep in mind that substrate fish will mean no survivng fry from the rams, if that matters; cichlids will spawn when settled, regularly, and will do their best to protect the eggs and fry, but all substrate fish (corys, pleco, etc) are nocturnal and this is when they easily get the eggs or fry. So if raising some of them is desired, leave out substrate fish.

Byron.
 
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#27 ·
Thank you, I think that would give me some activity in the tank that I would like. As far as raising the rams, its not a priority of mine, because my water is medium hard and not the soft that people say that blue rams spawn in. If they could spawn, I would not mind that, but I am limited on space and if I were to have babies, then I wouldn't have room for them.

As for substrate fish, I really want to stay away from cory. I have cory in my two other tanks (I have three total) and I would rather find something different to add to this tank. Earlier you mentioned the whiptail catfish, would this go well with the rams or no? If not, I will have to look at what my fish stores have in terms of bottom fish. (Also, keep in mind that I do have a decent number of snails patrolling my tank)
 
#29 ·
Thank you, I think that would give me some activity in the tank that I would like. As far as raising the rams, its not a priority of mine, because my water is medium hard and not the soft that people say that blue rams spawn in. If they could spawn, I would not mind that, but I am limited on space and if I were to have babies, then I wouldn't have room for them.

As for substrate fish, I really want to stay away from cory. I have cory in my two other tanks (I have three total) and I would rather find something different to add to this tank. Earlier you mentioned the whiptail catfish, would this go well with the rams or no? If not, I will have to look at what my fish stores have in terms of bottom fish. (Also, keep in mind that I do have a decent number of snails patrolling my tank)
Watch the temperature; Whiptails are not warm water fish, so not a good match.
 
#28 ·
I was going to suggest the silvertip tetra but you wanted and orange colour, they are more gold/yellow but are Ok up to 82F. Not my choice to only have a 2 degree temperature range overlap though. You really should have the temp ranges match up closely as it is easier to manage with some variations and easier on the fish long term.

Jeff
 
#30 ·
The regular whiptail is listed as 68-77F whereas the red lizard is 71-82F... which, besides the colour, was one of the many reasons I chose the reds for my second tank.... still not as warm watered as the rams, which I think are 80-86F.

Jeff.
 
#31 ·
The regular whiptail is listed as 68-77F whereas the red lizard is 71-82F... which, besides the colour, was one of the many reasons I chose the reds for my second tank.... still not as warm watered as the rams, which I think are 80-86F.

Jeff.
Yes, thanks. This tank could be at 80F (considering rams, red whiptail and the espei rasbora).
 
#32 · (Edited)
ok thanks. I may end up staying away from the substrate fish then unless I find one I like that can take the higher temperature.

You guys seem to really like the plant idea. Any plants you would recommend to place in the tank? Floating or planted? (I only have gravel that I can put plants into though). I currently have cabomba but I would like extra
 
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