Quote:
Originally posted by TekCat
That's interesting idea, but wont large rubble collect detrius? Yes, I know, increase the flow,... but rather than tinker with it, laying screen might be easier. Do you think screen could get clogged up with junk too?
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Your RDSB should be located at a point in your sump where there is no detritus to be imported. If you cannot do so with your existing system, add a small mechanical filter.
I don't see a benefit to moving any more than 50 GPH over the sand bed. We want to keep it anaerobic with a long contact time. I would use a bleeder valve on an existing pump, rather than add a new dedicated pump just for that purpose.