Overflow stand pipe ?

jrlafrance · Apr 29, 2008

My tank has a built-in overflow, with a 1" durso pipe. I spoke to Justin at AW, and he suggested using a 1.5" pipe to increase water flow. However, the bulkhead would restrict the flow back down to 1". Will this increase the flow, or keep it the same? My other problem is that my overflow is only 6"x6". If I go to a bigger size durso, it won't fit. If bigger diameter piping increases flow, should I go to a Hofer Gurgle Buster, or Stockman style drain pipe?

nahtanoj · Apr 29, 2008

what size tank and sump do you have? that will determine the amount of flow you should be running. the bulkhead would restrict flow. i believe 1in pipe can handle roughly 600gph. that is plenty of flow. to much flow through the sump prevents proper skimming and filtration.

jrlafrance · Apr 29, 2008

145 gallon tank, with a 30 (when completely full) sump. The sump is divided into 3 parts, pretty much equal, skimmer area, return area, and refugium area, in that order from right to left. Bothskimmer area and refugim area spill into the return area.

reef_doug · Apr 29, 2008

I'm assuming you have a glass tank and can't enlarge to 1-1/2" bulkhead?
Do you have one or two bulkheads?

1" bulk head would allow about 600 gph.

If you have 1" bulkhead, then I would go with a 1-1/4" Durso with a reducer to 1" per Richard Durso's instructions. http://www.dursostandpipes.com/BuildYourOwn/tabid/54/Default.aspx

Overflow stand pipe ?

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