My big tank-29 (3 mollies, 2 swords, 4 tetras, 1 sword fry in a fry isolation tank, and a pleco) has been a problem for a while. They've recently had ick and (I'm pretty sure fin rot). Their ph is right about 72(which I don't understand b/c the same water gave my fry tank a 60 ph. I've added crushed coral to raise the ph in the fry tank. Afraid to do it in the adult tank as the pleco has lost almost his whole tail and from what I read they can only tolerate a 74 ph (highest). But now I find my adult tank has a high ammonia level. Last night it seemed to between 3.0 and 6.0. I used ammonia clear tank buddies this afternoon. Now it is reading about a flat 3.0. The directions say to do a 1/4 water change and do it again, if needed. Is this what I should do?
My fry tank-14 has great ammonia levels, but using one of those 5 in 1 tests, which I know are not popular here (but Walmart is the only thing for 60 miles) the Nitrite seems to be just a touch below 3.0 and the nitrate looks right about 40. The fry seem healthy. They eat. They are very active.
The adult tank has appeared as the problem. I bought the product to check them and checked the fry as well.
Should I try the ammonia clear tank buddies again in the adult tank? What should I do? Should be concerned about the Nitrite in the fry tank?
Also, the isolated fry in the big tank is big enough to join the fry tank. Is it safe to move him in these conditions?
Please help. I'm going crazy!