I feed NLS pellets 95% of the time. But I have a datnoid that is extremely hard to pellet train so when I think I staved him too much I feed frozen krill or frozen silversides. Sometimes live blackworms or earthworms. The fish all seem to be healthy and growing but randomly I see white poop. Could this be from the frozen/fresh food or is it definitely a parasite. I've used 500ml water to a tablespoon of Epsom salt soaked pellets for 5 day twice now. I'm starting the 3rd go now. I wait a week in between. Is there something else or is it maybe the other foods and I'm overreacting. This is the best pic I could get before the turd fell off. I do 50% wc on Fridays and every other tues I use prime parameters are am 0 nitrite 0 nitrate 10-20. I feed once a day and fast a day every other week. Except on the epson salt I try to feed two smaller portions a day for 5 days. Thanks. 
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