So what I am looking at is spontaneous death between 4 am and 10 am-- can low CO2 or bad filtration (stupid canister filter-proquatics 2400) or anything else like that cause the death of two seemingly healthy fish and a huge coral banded shrimp whom I've had from the very beginning?-- How can I tell if my fish food is bad? Oyster eggs are expensive- but I will chunk them if there is any possibility that it poisoned my babies-- It seems like they were poisoned or something-- what other kind of parasites are there that could kill off fish so fast? I have some pics of my fish that I took two days ago-- I will try and resize them and submit them right now--