Join Date: Jun 2007
Location: Tsawwassen, BC, Canada
What type of tank are you putting it on?
For my planted tank, I layer ceramic rings, activated carbon and a polishing pad.
On my African tanks I use crushed a very course sponge and then only ceramic rings/bioballs.
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"You think you have tomorrow, but when tomorrow comes it's not tomorrow; it's now- and that's all you have" - Marc Johnson
Ehei-Pimpfen 276 yo!