Monster Canister on a Nano Tank - can it be done?

[knifegill]

Sounds like we have a winner.

 

[Just Toby]

This is not true...

Aquarium pumps and filters use a "magnetic drive" impeller assembly. The motor turns at it's given rate and turns the impeller via a magnetic connection. If/When the impeller is slowed down, the motor continues to turn at it's given rate, the impeller just skips a revolution.

So do not hesitate to use a ball valve or similar to slow down the flow of your canister filter...

On "Straight Drive" pumps, such as most pool pumps, slowing the flow rate with backpressure will put excessive wear on the pump resulting in any number of problems...

Good Point...


Having thought about it I would say give it a try.

 

[Redearsunfish]

1. Ok. so i can definitely throtle back the output via ball valves and not worry about damaging/heating the drive motor in any way?

2. Why do my Aqua Clears HOB motors get hot if sand causes the impellers to stick for a period of time? I thought they were magnetic too?

 

[Just Toby]

I am sure they do get hot if stopped, this may be due to the magnetic energy not being released or the cooling of the impeller moving and having thought about it I have felt a hot, jammed impeller but that is jammed and not just unable to flow.

Why not just rig up a bucket (USA Pail??) and run an external throttled back and just see what happens.