I have about 30lb of live rock in the tank right now, the other 30 is going to come over from my other 25g tank once this one is done cycling. I will keep that in mind about mature sand. Been playing around with placing them, and I think I might have it figured out....I have them placed on the sides aiming at the back of the tank, and so far it seems the only place that it won't kick up the sand.
Jeff
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