Crushed Seashells

[duanne hardy]

Hi I have collected crushed seashells and rock from the beach and would love to use it as gravell for my african ciclid tank.can it be used?how much shuld I use ?I roughly have a 66gallon tank. And would boiling it be sufficiant enough to clean it?

 

[rifty]

yes you would need to saok them a few times 5/6 first also test they do not contain metals that can rust using the vinger test