I did post a thread....under tank startup. Basically: I cycled 55g with dr Tim's. Conditioned with prime, mixed 1/4 tap (extremely hard), 1/4 distilled, and 1/2 RO. I let the water sit with air stones for 2 days. Added dr. Tim's, then added fish 12 hours later (5 adolescent angelfish - 1.5 inches each), 2 blue rams (slightly under 1 inch), and 1 bala shark - 2"). I test twice a day. I never saw ammonia. After 3 days, I saw .25 nitrites. When I still showed .25 nitrites after 40 hours, I added a 20g dose of birospira. The nitrites were gone in the morning, nitrates are under 20, and have remained this way for 6 days. I have driftwood (barely scrubbed to help soften the water), an aqua clear 300 filter with sponge/carbon/bio-rings inserts, and fake plants/decorations. My first question is about kh/gh/ph. I started with gh -9, kh-8, ph-7.6ish. The gh has only gone down to 8. The ph (according to live meter hasn't changed. However, the kh dropped to 5, and is now back at 7 (not drastically...over the 2 weeks. So, why is my kh doing this? Second question: all of a sudden, 3 days ago, my water got cloudy. It has gotten progressively worse. As I stated, the tests have not showed any changes in ammonia, nitrites, nitrates. I have not changed any water yet, as I was instructed not to touch the water for 4 weeks so the one and only would completely work. I have has to add water, due to evaporation in this hot weather, but I make sure temp/kh/gh match, and condition with prime. So...since the fish seem fine, should I do anything about the cloudy water? It's driving me crazy, but healthy happy fish is the only thing that really matters. The cloudiness is milky white, and probably a bacteria bloom. Will it really just go away on its own? I do have a purigen and 20g whisper filter on hand, but I'm afraid to add it to the tank, because I've never used purigen, and I heard it will suck anything good that the driftwood is doing to soften the water out of the tank! Please advise! Finally, silver is my biggest angelfish (the one who's find are turning blue). I put her in the 55g after the nitrites went down, but had to remove her when she attacked every angelfish in the tank! She's now in a 20g by herself happy as a chum....but still blue! She's a little over 2 inches from mouth to end of tail. And approx 3" from tip of top fin, to tip of bottom. She was about an inch long when I got her, and I've had her about 2 months. I have no idea her age. She used to be the "mommy" of the tank. She would "resue" any small angelfish by swimming in front of the attacking bigger one! Then she would swim with the little one a while, to keep it safe. Now, she's fine with any other species, but she turns sideways and will literally hunt down and attack any angelfish of any size! If you think the blue is something to worry about, as she's not an adult yet, please let me know. Any advice on her behavior is helpful also, as I really wanted her in the big tank! Sorry for the long post. It's very hard to navigate on my phone! I'm trying to post pics now!