My water parameters are correct, 10ppm nitrates and 7.0 ph. Temperature is right at 82f. My wild caught festae have white stringy poop and seem to be pooping alot, yet they do not eat. A few weeks ago they would eat thawed frozen krill, bought from petsmart. They used to eat pellets and seem interested but don't try to eat them. I have treated with jungle parasite clear tablets dissolved in water twice and haven't seen an improvement.. their belly's are slightly sunken in and colors are dull...please help with any suggestions you have