Hey, I added 8 Serpae tetras and 4 albino corydoras to my tank over the past two weeks, four at a time with several days and water checks in between. I also got a plant order in yesterday which is anubias and crypts and I added a third piece of driftwood as well. My water has been around pH 7 Ammonia 0 and I was out of testing supplies for the other things. Yesterday I cleaned my filter as it was GROSS, I have a double HOB with biowheels (that actually spin!). I only cleaned one filter and did so with the same water I use for water changes (though the filter was damaged so today I had to buy a new one and replace it) My water parameters yesterday were pH 6 (or lower since it doesnt show on the liquid tests below 6) and ammonia was a strip test which showed me three different colors so it was betweeen 0 and 8 (ugh i hate strip tests!!) Today the store got in a shipment of new tests and called to let me know! YAY! My parameters with LIQUID tests were .5 ammonia the test kit for GH and KH confused me as they are nutrifin, it says to multiply the number of drops by 20 for GH to get the color, it took me 29 drops for the solution to go from pink to blue, so that puts my GH at 580 mg/L or (ppm) and my KH was 4 drops times 10, 40 mg/L (PPM) 1.0 Nitrites The store still didnt have a Nitrate test kit in so I don't know that. So, what should I do to get things under control? My numbers seem all over the place and I don't want any die off, I have apple snails and they need good water to have good quality shells. I bought something called Biomax by Aquaclear but wasnt sure if i should add that now when i just took a filter out or not. Thanks for your help!!