Quote Originally Posted by Russ750 View Post
I think that with three pumps before loop your asking for leaks. But with them spread out in the loop. It significantly reduces the pressure. At least of the first few fittings/blocks. My analogy wood be put three pumps on a floor. And try to pump the water, 24' straight up a wall. The third pump in the series would have the most pressure on it..

Now if you spread the pumps out. About every 8' they would all have about equal pressure within the pump housing. At least that's how i understand it.
If i am wrong please someone correct me. I don't want to be spreading bad data.
Yes, that's a good point.

If you spread the pumps out, that will help keep the max pressure down. In a sense, it's getting used up by the blocks and added back in by the pump. You'll still have fairly high pressure because of all the pumping power, but the peak would be reduced because you're distributing it over the whole loop.

Nice setup!