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#1
12-01-2011, 06:22 PM
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You said you capped off the top?.... If you did, you still need a vent hole.... Start off small and increase size til the gurgling stops
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260g mixed reef, 105g sump, water blaster 7000 return, Bubble King SM 300 skimmer, Aqua Controller Jr, 4 radions, 3 Tunze 6055s,1 tunze 6065, 2 Vortech MP40s, Vortech MP20, Tunze ATO, GHL SA2 doser, 2 TLF reactors (1 carbon, 1 rowa). http://www.canreef.com/vbulletin/showthread.php?t=50034 . Tank Video here http://www.vimeo.com/2304609 and here http://www.vimeo.com/16591694 
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#2
12-01-2011, 06:27 PM
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Sorry, forgot to mention that I drilled a vent hole in the cap until the top became a lot quieter. Started out with 1/16" hole. Kept going until I had 2 holes at 1/8" and two at 3/16". Did I move too fast? Am I letting in too much air now? It seemed that until I had this many holes, that as soon as I put the cap on the overflow, it wanted to overfill the corner.
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#3
12-01-2011, 06:44 PM
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What i did to allow some "adjustment" was drill 3 x 1/4" holes through the side of the cap into the pipe it sat on. I didn't seal the cap on to the pipe, and could twist it to open/close the holes. worked out great until I put a high flow pump for my return, lots of microbubbles in the duroso set-up.
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My 150 In Wall Build
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#4
12-01-2011, 08:32 PM
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I am using a plug, but that would work for adjustment as well. Will try that. Thanks. So if I get the setting up top right, will that cure the bubbles down in the sump? These are not microbubbles, but rather huge boiling effect.
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#5
12-01-2011, 08:38 PM
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Pipe running straight dOwn into sump will be impossible to get quiet with a durso standpipe
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250G DD LED SPS R.I.P. 180G LED SPS 80"x36". 300G custom build Owner of Mountain Ridge Heating and Gas Class A gas fitter, HVAC
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#6
12-01-2011, 08:56 PM
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With a filter sock on the output you'll be fine for bubbles, I was running without them, so the bubbles freely travelled to the return. After lots of fine tuning the duroso was quite, the bubbles on the output where louder than the intake of water at the top. I swapped to a single herbie instead of my 2 duroso's, if you have that ability I'd recommend it.
Also, if the main input to the duroso is getting air you will have a loud bubbleing, i used a 90 and brought the intake down 4" under the water line, it was well needed, stopped large bubbles, only had smaller ones from the air intake.
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My 150 In Wall Build
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#7
12-02-2011, 04:05 PM
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Thanks for everyone's help. Last night I made a "zig-zag" with 4 - 45° elbows and that reduced the boiling by about 75%. Still going to try a few tweaks to this and try to get it even better. Maybe play with the last downtube length and depth in the water.
Cheers, Leon
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#8
12-03-2011, 01:56 PM
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Quote:
Here's a pic of mine. 
__________________
 My 70 Gallon build: http://www.canreef.com/vbulletin/showthread.php?t=66478 My Mandarin Paradise: http://www.canreef.com/vbulletin/showthread.php?t=72762 I wonder... does anyone care enough to read signatures if you make them really small? I would not. I would probably moan and complain, read three words and swear once or twice. But since you made it this far, please rate my builds. 
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