The first one came completely broken, I contacted Amazon and they immediately sent a replacement which arrived safely. This works as advertised, floats in the tank. I've never lost it, but tends to go with the flow at times. My large aquarium got a head start and found out they can push it so they think it's a toy. I simply attached a seaweed clip to the rim of the tank to secure it now that my fish have taken the baby snails with them. Even my mysterious baby snails, which hatch as big as a poppy seed, can't escape it.
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