I have a six month old -ish black veiltail angelfish. Its been housed in a 46 gallon planted aquarium with 8 cardinal tetra, 8 cherry barbs, 3 albino cory cats, various ghost shrimp, and some otocinclus. Water parameters are usually: Ammonia, 0. Nitrite, 0. Nitrates, 10. I do about 50% water...