Overflow either flushing or gurgling :(

[vanreefer]

I have a problem with my external overflow box ( or I guess below the box)... I built a durso to fit in the CPR overflow... and I either have to keep the hole on top of the durso so small that it sucks air or it does the whole flushing thing. I originally had the 1" pipe entering the water in the sump vertically... read that was a faux pas so I put a 45 in the pipe and had it enter on a 45... same problems... So I went out and bought a 1"-1 1/2" expander attached a 1 1/2 " 90 and a T on the end... same problem... of course the tank is in the living room and I think my roommate is about to put a brick through the tank to quiet it... which would probably work but there has to be another alternative... Any explanation or even pics (prefered) that you have would be verrrrrrrrry much apriciated (sp?)
TIA

[Invigor]

maybe try a stockman silencer

http://www.rl180reef.com/pages/standpipe/standpipe-ken_stockman.htm

[vanreefer]

anyone tried this one http://mywebpages.comcast.net/domitron2/HGB/HGB_construction.html
I just threw one together and it runs super quiet :biggrin: :cool:
gotta be to good to be true

[Invigor]

glad it worked!

[andresont]

I have a problem with my external overflow box ( or I guess below the box)... I built a durso to fit in the CPR overflow... and I either have to keep the hole on top of the durso so small that it sucks air or it does the whole flushing thing. I originally had the 1" pipe entering the water in the sump vertically... read that was a faux pas so I put a 45 in the pipe and had it enter on a 45... same problems... So I went out and bought a 1"-1 1/2" expander attached a 1 1/2 " 90 and a T on the end... same problem... of course the tank is in the living room and I think my roommate is about to put a brick through the tank to quiet it... which would probably work but there has to be another alternative... Any explanation or even pics (prefered) that you have would be verrrrrrrrry much apriciated (sp?)
TIA
The noted before is good , but check this one out also Durso pipe is less complicated and it works in my system no noise. Make sure you check the strainers page too
http://www.dursostandpipes.com/

[Quinster]

my modded durso

http://img.photobucket.com/albums/v638/Quinster/MVC-004F.jpg

http://img.photobucket.com/albums/v638/Quinster/MVC-007.jpg

http://img.photobucket.com/albums/v638/Quinster/MVC-005F.jpg

I can adjust the level in my overflow by opening or closing the valve coming through the cap...works like a charm