Re: [APD] Re: Aquatic-Plants Digest, Vol 14, Issue 51

[Chuck Gadd <cgadd at cfxc_com>]

Laith Arif wrote:

> Or have you put some type of on/off valve on the hose?  If so, blocking the
> flow of water with a valve doesn't harm the pump?
>  

I'm not sure of the answer to your actual question, but with "powerhead" 
style pumps (submersed impeller driven) it's perfectly fine to restrict 
the output of the pump, but it's very damaging to restrict the input to 
the pump. 


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