Kari
Aquarium Advice Activist
I'd heard somewhere that you can soak seashells in bleach water, and then regular water, to make them safe to use in fw tanks. Well, I tried it. Now I have a question because it did something really weird when I added the bleach. Within about 10 minutes, the water got really cloudy, and within half an hour, there was solid white chunks in the water. I've done this three times now with one particular shell, and it still clouds when I add the bleach, but the chunky white stuff looks more like a white sandy sediment now. Of course, I've never done this, so maybe it's supposed to do that, but I've never seen bleach do that to anything, so I figured I'd ask.