Restricting Mag 9 flow

[ricwilli]

Is it ok to restrict flow on a Mag 9 with a valve? I would like to use it as my return but my overflow can not handle that much flow.

[RichConley]

yes, its fine, as long as you dont close it all.

[samherston]

You can throttle those back as much as needed!

[Tennsquire]

Just make sure to restrict the output side, and not the input. You can also "T" the return and then gate a return to the sump to adjust your flow to the aquarium.

[sjm817]

Yes, restrict the output, not input. As long as it is not severely restricted (almost shut of), it is fine. I dont really like to T off the flow unless that flow is for good use to send to a fuge or other filtration device. If you just restrict the flow instead of bypassing some of it, the pump will use less power and create less heat.

[RichConley]

<a href=showthread.php?s=&postid=10264334#post10264334 target=_blank>Originally posted</a> by Tennsquire
You can also "T" the return and then gate a return to the sump to adjust your flow to the aquarium.
Which will cause the pump to use more energy, and create more heat.

[AquaReeferMan]

I have my mag-12 ball valved. I use about 75% of the pumps output. Its fine.

[ricwilli]

Thanks everyone..... What does it mean when a pump says "Pressure Rated = NO" Does it mean that I can not put a valve on it to restrict the flow?

[Icefire]

not for high head pressure (sump in basement)