Not necessarily, reeflo pumps for example run more efficiently if valved off a little. They actually recommend it. Valving off a discharge is the equivalent of more head pressure.

He's talking about Mag pumps or their equivalents. I've always been told that valving off Mags & similar pumps is a no-no. I've never done it so I have no personal experience of it causing a pump to fail. If I'm wrong, then I apologize for passing on bad info. However I was told this by several experienced reefers.

Anybody valved off Mags or similar pumps on here & if so, what has been your experience??

Anthony

IMO the sicce pumps are one of the more reliable pumps out there, personally the best pumps I've ever owned were Laguna pumps tho but they can get expensive

Anthony,

I bought a Mag 5 but returned it for the Mag 7. What's the optimal number of times a tank needs to circulated?

I'm setting up a 45g cube with a 25 gallon sump.

Thoughts?

Just put a piece of foam rubber under it. I ran a mag9.5 for 5 years and it was silent with a pad under it, other wise the vibration goes through the glass bottom of the sump and can be loud. I had mine throttled down (discharge side only) for the five years with no issues, the new owner has no problems with it either. With a larger pump you can also tee off of the discharge and use the extra flow to run reactors or divert flow to a refugium, etc.

If you want to valve off a mag put a tee fitting on your return with a ball valve and open it up letting the excess flow go into your sump :) no back pressure needed . Making a controlled leak . Keep it underwater by the pump for no noise

intarsiabox

What type of foam rubber did you put under your pump?

I would like to do the same with my setup.

Thanks!