Hey all, this is my 33 gal tank that i have had running and cycled for probably a year or so now. In it is one figure 8 puffer and 2 knight gobies. The fish are doing well but i am noticing a LOT of debris all over the plants and gravel and I'm not sure what the cause is. At first i thought it was just fish waste, but its becoming an absurd amount every week that 3 fish can not produce at all. Ive heard about diatoms, but have never experienced them so i am not sure. I also seem to be having an algae issue. On the tank i have one 39W T5 HO 4500k strip light and it runs for JUST over 6 hours a day. Im not sure what is the cause of both this debris and the algae- I'm not even sure if they are related. I think all my plants are low light ( anubus, ciliata, java fern)- and they have been just sustaining over the last months but i haven't seen a lot of growth at all. Any help would be awesome, and i have attached some pictures to help paint a better picture. Please chime in with any and all advice!