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You're probably fighting a losing battle... its been my experience that sand always sinks down to the bottom and any sort of gravel eventually rides on top. Think about it- grains of sand are smaller, they are eventually going to work their way down through the airspace in the flourite.no replies
how do I keep that damn flourite away from the sand?
I think any tank that maintains a sand space successfully does so because some sort of barrier (like clear plastic) is installed before the sand and gravel are poured in. I have definitely seen this done in other tank journals on this site and APC.