Does anyone have a favorite online supplier of hermit crab shells? The only ones I can find have painted or dyed shells, and I suspect that these are NOT a good idea in a salt water aquarium environment. The blue legs I bought instantly grabbed different shells after I put them in the tank, but the sizes available are almost identical to the ones they came in, so I know I'll be needing to provide bigger ones soon at the rate they are eating!
TIA
TIA