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**Damon** · 03-17-2008, 03:39 PM

In theory yes...........
Let me see if I get this right.
In a perfect vacuum, that would hold true. But we know that is not always the case. Air bubbles and debris in the waterflow created by numerous things will have an effect. I would guess it would be insignificant but would cause some head. Also as your filter pads clog. the flow would decrease on the return end.
The canister can handle only so much flow. Could lead to overflow if not balanced.

Just my first thoughts on the matter. Feel free to correct me.

Found this link...... Probably more accurate...

http://fish.suite101.com/article.cfm..._a_return_pump

03-17-2008, 03:39 PM	#2
Damon Aquatic Naturalist Join Date: Jan 2005 Location: Dayton, Ohio Age: 32 Posts: 14,982 User Feedback: (0)	In theory yes........... Let me see if I get this right. In a perfect vacuum, that would hold true. But we know that is not always the case. Air bubbles and debris in the waterflow created by numerous things will have an effect. I would guess it would be insignificant but would cause some head. Also as your filter pads clog. the flow would decrease on the return end. The canister can handle only so much flow. Could lead to overflow if not balanced. Just my first thoughts on the matter. Feel free to correct me. Found this link...... Probably more accurate... http://fish.suite101.com/article.cfm..._a_return_pump __________________ For in much wisdom [is] much grief: and he that increaseth knowledge increaseth sorrow. Member of the AGA (Aquatic Gardner's Association) Member of the IBC (International Betta Congress) Last edited by Damon; 03-17-2008 at 03:42 PM.