[125G's]

I've got a CA4000 pump rated at 1100 gph at 6'. I've done test runs using a scwd but it simply overpowers it causing the scwd to cavitate. There's also a noticeable reduction in flow with the scwd vs. without. Max flow rating on a scwd is 1400 gph. So for the sake of this discussion let's say it has a rating of 1400gph at 0', though it's possible that it's higher. Max head for this pump is somewhere near 18'. The CLS will be subterranean with four jets coming out of the sand at a 45deg angle.

How much loss in flow should I expect to get if I plumb a CLS containing 9 elbows? (It's somewhat similar to tpecks and fatmans cls if you've seen their posts) I read a thread somewhere that gave a percentage loss per elbow but can't seem to locate it. If the loss is significant I'll order a mag 18 to drive this baby.

Thanks for the help!

Phil

 

[125G's]

That's a pretty good flow and means they've done a good job at rating these pumps, a bonus given mine is also a CA.

Learned one other thing about these pumps today..... suspend them off the bottom of your tank. During my tests I had the suction cups on and it vibrated horribly. Took them off and it quieted down significantly. I was afraid I'd have to order another pump on account of the noise.

Thanks for the feedback, Jay. Anyone else?

Phil