JeF4y;804004 wrote: So what about detritus build up in the matrix? In a canister or HOB it would be easy enough to rinse off, but those using as a substrate or Dave, with your active chamber, how do you deal with crap building up in it?
It is supposed to not need rinsing, in my appliction the main thing being the use of filter socks before the matrix in the flow path in the sump.
But you know, there is that ultra fine mulm that settles on the bottom of your sump. There is some of that on the bottom of the sock chamber, and some on the other side of the matrix in the skimmer section. I'm sure there is some of that in the matrix, and I foresee manually removing the matrix once a year or so for a rinse. But compared to there not being any detritus in the Display (bare bottom with about 40,000 GPH peak internal water movement), a small amount of mulm in the matrix is of no concern to me, really.
Just for reference to anyone reading this that needs it, my sump is an MRC Bio-Sump. the "BIO-Chamber" is that area towards the left side with the two small plexiglass lids on it. Those two partitions have about a zillion holes in them, and the matrix goes in that chamber. Water enters the sump through the left side, is mechanically filtered through 7" 100 micron filter socks, then is forced through the matrix and into the skimmer section in the middle of the sump.
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