I noticed a mention of this idea on RC from another post and decided to check it out. I've struggled with Nitrates for some time now. I've tired of countless water changes to get a handle on it. This was a really easy build. I had the plumbing parts laying around. The entry is 3/4" and the exit is 1". I used 60lbs of washed play sand and topped it with some coarse aragonite sand. My nitrate reading is 20 mg/L. I just did a water change today as well. I'll track it weekly for a few months and see how it does. You can read all about it at this link. It's a long read. http://www.reefcentral.com/forums/sh...5&pagenumber=1
DSB in a bucket
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