I ran my DIY trickle filter during the first 7 months of operation on my 38 gal reef. Rarely saw a nitrate reading over 10 ppm(usually 0), but I was letting sargassum, anthelia, and xenia grow like weeds.
I am running a trickle filter on a newly setup FOWLR/DSB. It's in the fourth month of operation. I rarely see a nitrate reading over 10 ppm. I'm in the cyano bloom period now so that may be taking up excess nitrates.
I pulled the trickle on the reef, because I needed to redesign my sump and wanted to apply a more natural approach to filtration(DSB, algae, fast growing corals)
I'm a firm believer that any system will work, you just have to figure out the balance of nutrients, whether it be through using rock, sand, plant, coral, trickle or skimmer.
[ August 01, 2001: Message edited by: fishfarmer ]