Took my granddaughter to the local Walmart to buy some fish and a fish tank...Almost all of the fish in the tanks were dead and some already decaying...the store mgr Mark claimed he knows and they have been having problems...those dead fish were in there for days to be decaying like they were...how horrifying to show my 3 yr. old granddaughter all those dead fish! Shame on you Walmart! Clean out the tanks at least until you can fix the problems!