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The thing is, I found no benefit what-so -ever, in running a 55 gal. sump/deep sandbed/calerpa, on my 170. It runs better/as good, with a normal sump, and my Euroreef.
I figure the sandbed in the tank is enough by itself. The sump/refugium was also a pain in the backside. After the calerpa finally crashed, I just ran the sandbed, sometimes with the skimmer, sometimes without.
Any life produced by the sandbed and/or refugium, had to go through the main line Iwaki pump, never mind, skimmers and powerheads, to be of any benift to the tank. So, this concept for me, was just a filter, doing the same job as running my efficient skimmer.
Now with a scrubber, sitting on top, its a total different concept. Much better use of turf alages, no sumps, no large pumps and the one feeding the filter, will be before it and not after. Of course the downsize, is the cost of an ATS.
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Doug
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