No, don;t use sponges, Nitrate factories. Use Egg crate. If you have 1 1/2" CL intake, but you split it to T's. you now have 4 intakes, each one had a real low suction. an amemone won't get sucked in if you cover the opening with egg crate.
But were getting off the OP's topic here I think.
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Dan Pesonen
Umm, a tank or 5
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