Re: pvc overflow
Quote:
Originally Posted by rynox77
I used Ts instead of joints and left them open to the air and I actual had much better water flow than using 6 elbows. Here's the video.
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Obviously, I'll have to use 1" plumbing and tweak the dimensions, but the point is proven.
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I found more water flow also when the outside Tees were open to the air also.
Amazing what a few bucks of pvc can do. 
Congrates. sounds like your experiment worked very well.
FWIW I have had some people attempt to build these things with no success because they did not fully understand and/or implement the design. Fortunately you got it working. So either you're a good designer or listener or both. 
my .02
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fw leiden since 1979, fo salt since 1979, mixed reef 55g 2002-2009. Strong emphasis on the tank taking care of itself. Balanced with plant life, no water changes, tap water, no filters in FW. Only dosing calcium, alk, mag in marine reef tanks. http://www.aquariumforum.com/f15/my-...ods-26410.html
recent tanks (till 2009) 7 years- 10g FW leiden 7 yrs, 55g mixed reef 7, 2 yrs, 20g FW leiden, 10 g fw leiden , 29g mixed reef, current tank 55g leiden
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