Hi all ive been posting about this situation previously but my fish keep dying un fortuanlty i havent invested in my own water test kit but i will do that soon hopefully i took a sample to get tested at the local petco and the lady said that my nitrate levels were off the charts and most likely they were being poisned which kinda makes sense becuase there seems to be nothing wrong with them they are just dying randomly she suggested that i do A 25 percent water change today 10 percent tomorrow and ten percent on friday and come basck with another sample anyone have any other ideas i really want to prevent my other fish from dying they mean alot to me have had some for over 2 years now the only other thing ive seen is them scartching on rocks alot and twitching which lead me to believe they had internal parasites should i move them to a bigger 75 gallong ive had set up for 2 months now the nitrate levels arent off the charts as in this tank maybe that will stablize them any help[ would be greatly appraciated