I will NEVER buy anything fish related from Walmart again. So about 2 weeks ago I bought an ornament for my 10 gallon from walmart. It said Aquarium Safe. I rinse it off, leave it to soak for a few days and rinse it off again before I put it in there. The first few days everything is fine. Then my water started clouding up and 2 of my fish are dead. I immediately do a 75% water change and go to put my surviving fish in the quarantine tank (that I had set up and my mother had emptied...) so my fish were stuck (I didn't think it was the ornament at the time) then everyday at least 1 fish died until I finally broke down and took my 2 still living guppies back to the store. Petco tested the deceased guppies and told me it was poisoning from some kind of paint. And what was the only thing with coloring? The "Aquarium Safe" product from walmart. In one week EIGHT of my ten guppies had died. I've completely gotten rid of the gravel, and water as well as the sponge in my filter which means I'll have to re-cycle my tank all over again, meanwhile I've got a betta fish arriving wednesday and I hope to god the safe start I used will have it cycled with some safe bacteria by then because I have no other aquarium/quarantine tank to put him in. Ok end of rant, and please send positive vibes to my tank so it's safe enough for my betta boy.