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nportelli · 07-12-2001, 03:40 PM

I admit I have no experience with closed loop systems. I still don't see why it would make a difference. I didn't understand what you meant about 10-90 degree elbows. GPH is a rate not velocity. If you want more GPH use bigger tubing. Smaller tubing will make the velocity higher. And as a general estimate of a pump size most aquarists go by 90 elbows adding 1 foot of head. I think I stated it wrong last time. But what do I know I don't have a degree in fluid dynamics. I was just stateing what i knew from experience.

07-12-2001, 03:40 PM	#5
nportelli Cooling Neophyte Join Date: Jun 2001 Posts: 26	I admit I have no experience with closed loop systems. I still don't see why it would make a difference. I didn't understand what you meant about 10-90 degree elbows. GPH is a rate not velocity. If you want more GPH use bigger tubing. Smaller tubing will make the velocity higher. And as a general estimate of a pump size most aquarists go by 90 elbows adding 1 foot of head. I think I stated it wrong last time. But what do I know I don't have a degree in fluid dynamics. I was just stateing what i knew from experience.