rallysman;1941499; said:JD Man made this when he was bored. I put it to use. this thing works great. In the pix the mechanical filter section is overflowing because I stuffed it with floss to get rid of the lava rock dust (I didn't bother cleaning the lava rock...at one point the tank was red). Anyway, I still have some cleaning to do to get it ready, but I think it's going well for using mostly stuff that I had laying around.

dragonfish;1945498; said:Looks good but I thought there was a problem with lava rock breaking down and affecting water chemistry.
Mr Pleco;1947673; said:What size pipe are you running on the intake and your approx GPH?
Also who made the overflow box any more detail pics of this section would be appreciated ?
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ewurm;1949314; said:I doubt it. I understand igneous rock to be inert.
rallysman;1949615; said:it's a quiet one 4000 and I'm not sure of the actual GPH. The overflow box is a CPR style capable of 1600gph. It's connected to the sump with a 1.5" pipe. I'll try to get some new pix tomorrow. The overflow is really simple. The tiny standpipe I put in the overflow is awesome though. It makes it almost silent.
rallysman;1949615; said:it's a quiet one 4000 and I'm not sure of the actual GPH. The overflow box is a CPR style capable of 1600gph. It's connected to the sump with a 1.5" pipe. I'll try to get some new pix tomorrow. The overflow is really simple. The tiny standpipe I put in the overflow is awesome though. It makes it almost silent.
, show me pics.. I'll be moving next month so I have to re-plumb my tanks. ..gives me an excuse to upgrade