120 Litres Planted Tank Help Please
I am revamping my 120 litre tank.
So to start with as fish I will going to get
My water parameters are PH 8 (cannot lower this), GH 16 ( can lower this through resin ), KH 3. I know discus should have lower PH but I will try with aquarium bred discus which should survive in this kind of PH. Right now I am not interested in breeding them so that is not a problem.
Now for plants.... I will not use any CO2 in this tank. So i have 2 inches deep of Seachem Flourite gravel. I will fertilize weekly Seachem Flourish and will do weekly 20% WC.
Lightning i have 2x 24W T5's Warm and Day light. They will be on for 10 hours a day and also i have reflectors on them.
As regarding plants right now I have a couple of Sagittaria Subulata and Cryptocoryne Indonesia
I would like to add Nymphaea Lotus Red, Echinodorus Amazonicus, Cryptocoryne becketti, Cryptocoryne blassii, Cryptocoryne cordata, Cryptocoryne lucens, Cryptocoryne petchii, Cryptocoryne pygmae, Cryptocoryne wendtii 'MI OYA'.
As foreground something like Crypt Parva or Hairgrass? Or what do you suggest?
Do you think I will have problems with Algae? In this tank i had loads of algae previous like Spot Black Algaeon Subulata, Hair Algae on almost all leaves :(
That tank is too small for discus and the high temps they require will make planting the tank difficult as most plants don't do well at those temps.
well with discus i try to leave temp to 27 degrees Celsius and plants would be fine i guess.
Discus will not work in that tank for multiple reasons. First it is too small of a tank, second you need too high of a temp for plant to grow well, third discus ideally should be in groups. If you turn the temp down then you put the discus at much great risk for disease. They are expensive and sensitive fish.
I keep my planted tank around 82-83 (27/28 I think) and the plants are fine. Hairgrass would be nice for the foreground, or dwarf four leaf clover if you'd like something leafier rather than grassier. (Provided that you have enough lighting for them.) I don't think you'll have problems with algae with that many plants sucking up nutrients, but I'm sure one of the plant experts can give better advice regarding that. My main planted tank doesn't have as many plants as you've listed but it barely has any algae.
Out of curiosity, how many discus do you want in the tank? I know on discus forums you see nutters- I mean, members ;)- that have six adults in a bare 29 gallon and just change the water all of the time, but in a planted tank you'll want less. It may be hard to have more than one without bullying unless they're a pair or something.
I do agree with the part that a 120L (= 32 gallon) is not ideal for discus.
What I have to disagree with is the plants. In my tanks here http://www.tropicalfishkeeping.com/p...hp?userid=1029 I run Temp's varying from room Temp (~70F) to 82F and 27C = 80.6F and that's more then fine for plants by all means, neither too hot nor too cold, especially the plants listed above will do great in these Temps.
As for you algae question, a well maintained and quality tank set up will not have / extremely minimal algae issues. So if you have algae issues that points you in the direction that something is out of balance in this tank, the balance being the amount fish(waste) / water changes / nutrition / lights(spectrum) - If all the parameters are in balance you have no issue. Just at first glance w/out further info from you I think your troubles are buried in the part where you say weekly 20% water change. Ideally you'd rather want to see a 40-50% w/c, obviously if the tank is overstocked/ stocked with fish that produce greather waste then the water volume (eg. several Discus housed in a 30g) then the w/c got to be even greater.
That all said, easiest really is for each individual case of algae to look at the set up in details and eliminate your issues from there.
I was thinking of getting 4 Discus
There is not sufficient space in a tank less than 4 feet in length for a group of discus to be healthy. It is true as someone mentioned that you can have more discus in a smaller tank with extensive water changes (Jack Wattley writes of 90% water changes several times a day) but this is not recommended for a "display" tank which should be set up initially to use natural processes sufficiently without such massive intervention--which is a sure sign the tank is not balanced.
A 4-foot 75g would house a group of discus, say 5-6, comfortably, along with suitable tankmates. The temp must be 80 or higher. You can check out info on this fish in our profiles, under Discus and Heckel Discus (Symphysodon discus). [Edit: for some reason the shading only recognizes "discus" so you will have to search the Heckel Discus name in the profiles.]
In a large enough tank there are some plants that would manage. On no account should the temp be below 80F for the benefit of the plants at the considerable risk to the health of the discus.
I would like to get some discus in this tank so I better do it non planted?
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I am not going to belabour this, but I must be frank; putting discus in a small tank is not responsible and it will harm the fish and they are not deserving of that.
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