Hi,
I know that Zebra's can live through most water conditions, very hardy actually. Would you say 25% every other day? Isn't it better to not change the water until the nitrite's lower and there is visibility of nitrate's? Only asking because if I keep doing changes, how will bacteria build up in my bio-wheel?
I tried fish less with ammonia but it was messing up my chem tests. I don't have any mature bacteria from another tank, and have realized that ammonia doesn't create nitrite.
By high nitrates, it is about 4-5.
Thank you,
SM
Anwsering questions, etc in order:
Danios are quite hardy, which means it takes a lot more energy (pain) to kill them than other fish, thus they endure more than the average fish.
I would say 50% at least daily, or whenever you see any ammonia/nitrites over 0.20 ppms.
You could change the water once nitrates appear, but that means the cycle is either A), over, or B), almost over. By then, the danios would be severely injured, dead, or dying.
Bacteria are mainly on the surface of your tank. When you test, the bacteria is the bacteria that is floating in the water. There's a lot more that is hardly affecting the fish, on the sides. There will be 95& of the bacteria on surfaces, with you removing the dangerous 5%.
Ammonia shouldn't mess up your tests, unless it shoots up the ammonia. How exactly did it "mess up" your tests?
Nitrates are best between 10 and 20, while 40+ is considered high. I believe you are getting them mixed up with Nitr
Ites, which at 0.25 ppm are dangerous to fish.
Again, not starting a flame war, just some facts mixed with my opinion here,
-DP