flow for closed loop

[randy123]

I've heard that the newer OM's have small grooves built into the drums that allow a little bit of water by...they say this helps with the sticking that can result when sand or whatever gets in there. The plan for my setup puts the OM in a fairy accessible place as well, so I'm not too worried about that aspect of it too much. The OM is already ordered a few days ago...I got drum #3 for now.

I'll have to look at your thread later tonight Grizz, sounds interesting. I'm at work on nightshift, so I should have plenty of time to go through it...

While I have the tank down and drained for the install, it might not be a bad idea at all to add the plumbing for a second pump, but I don't think I will buy one for now. My wife has been understanding up to this point, but I don't want to push my luck.

[randy123]

I was think of 4 inch outlets as well, maybe for a back and forth wave effect?

[mark]

I'm another using a Dart with a 4way (single 2" inlet and 4-1" outlets). In the 6 years running had to replace the Dart once but 4way has been going non-stop.

[sphelps]

Dart and similar pumps are no different in design than most hot tub pumps, they will work perfectly fine turning on and off every so often. Would also give the motor a chance to cool. But I digress.

Not sure what your install plans are but if you can put the OM sideways and over the sump it makes maintenance a lot easier and less messy.