Zoas?

[Gordonious]

I’d always heard it shortened the life and it makes sense to me. I wonder if an internal pump produces more heat if dialed back, not that most of us are worried about a little extra heat.

I can see in you’re situation then that an oversized would work. I just get OCD sometimes with making things safe as possible and energy efficient as possible. I also haven’t had a full time job in many years so, so suppose that’s part of it.

Have you considered using the down flow from the water returning from you’re aquarium to feed these extra misc equipment that you might possibly hook up one day? I suppose it depends what the equipment would be.

[system]

I use gravity when i can. I just built a kalk stirrer that is uses a float valve for a feed and gravity/solenoid do dispense. Ill still need a pump to mix, im not sure there is a way to use gravity efficiently for a media reactor.

Im not convinced that slightly restricting the output of a pump shortens its life and i think the only “proof” that could be offered would be antecdotal since there are so many other outside factors that would effect its performance. Also, it would only make sense for the pump manufacturer to not want the flow to be restricted as a warranty catch-all.

My pump pushses almost 1200gph with a possible head of 22’ at only 110watts. When compared to my power hungry lights, im not too worried about 110watts.

BTW…i have Genx pcx40 pumps, im not sure why i thought they were little giants. I bought 2 on flea bay for 60 bucks when the retail for over 150 each. not a bad deal.