kickyourbrainintheface Posted September 19, 2003 Share Posted September 19, 2003 does anyone know the max flow i can get through a 1/2 inch bulkhead? i'm thinking 2-3 feet of head. this is a 25 gallon cube, with 2 drains and one return also, how far from the top should the holes be drilled? Link to comment
kickyourbrainintheface Posted September 23, 2003 Author Share Posted September 23, 2003 thanks for all the help guys! here is the 25 gallon acrylic cube. i went ahead and drilled 3 holes. 2 drains and 1 return. but i still would like your opinions on max flow through a 1/2 inch bulkhead. anyone? Link to comment
kickyourbrainintheface Posted September 23, 2003 Author Share Posted September 23, 2003 - Link to comment
dsb1829 Posted September 23, 2003 Share Posted September 23, 2003 1/2" bulkheads don't flow too great. You can get better performance by drilling them a bit deaper and using a standpipe. If you place them at water level with the strainer as pictured they will flow on the order of 100gph ea max. I used to use one on my 6g refugium with an iwaki md 10 feeding it under 4' of return head. That would work out to about 120gph. I then had to throttle back the pump a bit farther before the overflow could keep up. With a standpipe, so there is positive pressure pushing the water out of the bulkhead, I would guess a flow rate closer to 200gph each. Hope this helps. Link to comment
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