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RDSB
120
my understanding by reading the whole thread is that You could benifit by adding the dsb in the refugium, but it is diferent than the concept discussed in this thread. In the fuge plant material utiizes organic matter in the water and you remove it by harvesting every once in a while. In the DSB bacteria consumes nitrate and blows it off as air. To do this it has to be in the dark and relitively free of detritus, maybe Bean will let us know if I'm on the right track. I have built one & have it working, but my knowledge is based mostley on what I have learned here.
Alan
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