Help with home made durso

[reefkeeper135]

OK my tank is up and running but I have a question about the durso pipe....If I increase the vent hole on top will that increase or decrease flow? Thanks for any help...

[SonyMan03]

http://www.dursostandpipes.com/BuildYourOwn/tabid/54/Default.aspx

[reefkeeper135]

The lower the flow the larger the hole size needed.
Dont mean to sound stupid but this quote from the article is what Iam refering to....does that mean if you want low flow use a bigger hole? or if your experiencing low flow increase the hole?

[SonyMan03]

I think it means if your experinceing low flow make the hole bigger

[jrpdriver]

Increasing the vent hole will increase flow until you reach the limit of the drain, increasing the vent hole will also increase noise, so you want to find that happy medium

[reefkeeper135]

ok thanks guys, guess I will get a new cap tommorow and experiment...

[flyyyguy]

or forget the durso altogether and experiment with this :) Its better

http://home.everestkc.net/jrobertson57268/HGB/HGB_construction.html

http://reefcentral.com/forums/showthread.php?threadid=1225992

[celano]

You might want to pick up a couple. It took me about 4 caps before I finally found the right size. I'm not sure why but it took longer then I expected it to and if I remember right several caps went flying across the room.lol:D

[reefkeeper135]

LOL thanks for the advice "Celano" I will pick up a couple :)

[Gools]

my buddy drilled a 1/4 hole for air line tubing, put a JG valve on it, and adjusts it as according to needs.