Hey thanks for responding. The tank has been moved and isnt in ny direct light. Um lets see the light i use is a low blue LED
light. Its only ever on for about 2-3 hours sometimes less. Ive got guppys and the fish guy in the shop told me to feed the fish small amounts twice a day. He said to do this to avoid the other fish eating the guppys tails. Im going to do another 50% change tomorrow and maybe take out my plastic plants and give them a clean. Im thinking of getting a uv
sterilizer maybe that might help.