Hello from Fl. - Tropical Fish Keeping - Aquarium fish care and resources
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post #1 of 11 Old 06-08-2014, 07:05 PM Thread Starter
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Hello from Fl.

Hello,

I currently know next to nothing about keeping fish. I have been lurking for the last couple of days reading stuff like the cycling sticky trying to learn. I am thinking about starting an aquarium with my 7 yr old daughter as a kind of father-daughter project even though my wife doesn't like the idea since you can't pet the fish lol. I went to my local store and was thinking about doing the 20 G Tetra kit. My daughter liked the cory catfish and the pink danio and tetras. Will a 20 G be able to sustain around 3 of each of these? Thank you ahead of time for any answers because I know I will have questions.

James
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post #2 of 11 Old 06-08-2014, 07:24 PM
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Hello and welcome to the forum

For the danios and tetras, it's best that they're kept in groups of at least 6 of each to keep stress levels down. And danios are real tank zoomers so are best kept in larger tanks. They might be ok in a 20 though of it's a 20 long.

Same with corys, they are best in groups of 6 or 7.

Animal testing is a terrible idea; they get all nervous and give the wrong answers.
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post #3 of 11 Old 06-08-2014, 07:31 PM
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Another thing to note about corys, they need a smooth substrate like sand or smooth gravel so that their barbels don't get damaged. They root around in the gravel looking for food so anything sharp in the substrate could cause some damage.

Animal testing is a terrible idea; they get all nervous and give the wrong answers.
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post #4 of 11 Old 06-08-2014, 08:16 PM Thread Starter
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Thank you for the information. About how many fish can a 20 G sustain? It is a 20 long not high. I have read the 1 inch per gallon rule but sometimes after saying that they talk about top, middle, and bottom dwellers. Does the 1 inch per gallon rule apply to each level or to the whole tank. Sorry if I am misunderstanding what others are talking about. It is kind of overwhelming reading all this information but I am the type of person that wants to know as much as I can before I actually persue something.
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post #5 of 11 Old 06-08-2014, 09:22 PM
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Yeah the 1" per gallon rule is kind of vague. You wouldn't want to put a 10" fish into a 20 gallon tank for example.

Here's a fun little tool you can use to get a rough idea of what will work. You key in your tank size, filtration, types of fish and quantity of each and it will tell you whether you're overstocked and will even let you know if your selected species are compatible.

Don't take it as gospel - it doesn't allow for plants for example but it's a good place to start.

AqAdvisor - Intelligent Freshwater Tropical Fish Aquarium Stocking Calculator and Aquarium Tank/Filter Advisor

Animal testing is a terrible idea; they get all nervous and give the wrong answers.
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post #6 of 11 Old 06-08-2014, 09:59 PM Thread Starter
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Thank you again for the information. The website isn't working for me. All that comes up is a grey screen with two blank boxes.
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post #7 of 11 Old 06-08-2014, 10:06 PM
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Quote:
Originally Posted by JamesFl View Post
Thank you again for the information. The website isn't working for me. All that comes up is a grey screen with two blank boxes.

That's weird. Try googling AQadvisor and see if you can pull it up that way. Hopefully it's just the link that isn't working for you.

Or could be your browser?? I sometimes have issues in IE on certain sights so I switch over to Firefox and try it there. I did use IE to pull up the link tho.

Animal testing is a terrible idea; they get all nervous and give the wrong answers.
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post #8 of 11 Old 06-09-2014, 06:34 PM
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Hello and welcome! Yay for another Floridian too!

I had three long finned zebra danios for awhile and they seemed fine in a standard 20g, I have 5 now and they seem quite happy with it, so there should be no worries there.

I would invest in the test kit that comes with the droppers, it ran me around $30ish for pH, ammonia, nitrite, and nitrate testing, that will be a huge help to checking the levels of nitrates which is a primary (as far as I'm away) way to tell when a tank is fully stocked, as well as dictating how often you will need to be doing water changes. It'll also be a huge help in determining when the tank is cycled and when it will be safe to put fish in. I would stay away from the test strips, my first set was horribly inaccurate.

I would think that even with the additional tetras it may very well be fine. Just remember to add the fish slowly, maybe 2 or 3 at a time once a week at shortest and watch them. I will say that I have around that level of fish in my tank, but I also have a planted tank so the nitrates are being used almost as quickly as they are being produced.

Quote:
Originally Posted by JamesFl View Post
It is kind of overwhelming reading all this information but I am the type of person that wants to know as much as I can before I actually persue something.
This is always good to hear, an ounce of prevention is worth a pound of cure, this will prevent a lot of frustration. :)

Welcome once again to the forum!

Just a small fish in the great big sea.
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post #9 of 11 Old 06-09-2014, 07:24 PM Thread Starter
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Thank you for the information Ralij. Yes my biggest worry is overstocking and causing unnecessary deaths. While I know that some of my fish will inevitably die as I'm sure most peoples have. I would love to have a bigger tank but apartment life is not the biggest lol. Once again thank you.
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post #10 of 11 Old 06-10-2014, 03:02 PM
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My goal is for my fish to live forever. So far so good :P lol. I hear you on that, the first apartment I had limited me to a 5 gal tank, not so much fun. Just finishing my 20 and now I want another one.

Everyone on the forum is pretty helpful so if anything comes up just ask away!

Just a small fish in the great big sea.
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