07-28-2007, 12:39 AM
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I use Eco-Complete, it's a fine product. Almost all small gravel will compact, which is one reason I use powerheads in a reverse flow configuration. Specifically, Marineland 660r (r meaning reverse flow) with and undergravel filter. I also use powerfilters(internal and/or external) and canisters (on the larger tanks, 125 and larger). I'm kind of like Toolman Tim, if alot is good, more is even better.
The power filters also help to filter out larger detritious and adds even more biological filtration. A good thing.