If you're running your sump with the set up you can use lava rock in the sump just use a piece of liverock to seed it. Lava rock can be found for really cheap, I just took a whole bunch from the front of a store.....For Free
Anyhow make sure you boil the rock first for awhile just incase there is crap on the lava rock.
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Always looking for the next best coral...
90g starphire cube/400mhRadium20k/2 XHO/2x27w UV/2x39w T5/ 3 Trulumen led strips
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