cat shark

grouperhead

Active Member
Crushed coral is just that - crushed coral. It's still a pretty coarse substrate. The belly of a shark is very vulnerable and even fine crushed coral could scratch it. If you were to hold a handful of the cc and a handful of the ls, you would see the difference. Go with ls. Bo
 

moraym

Active Member
Even some of the coarser sands can cause problems on the stomach of sharks, I'd get a very fine sand for your substrate.
 
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