so...got it all set up..... added a mag 12 return pump and made a bubble/noise reducer chamber for the sump
http://i461.photobucket.com/albums/q...k/P6050004.jpg
http://i461.photobucket.com/albums/q...k/P6050005.jpg
http://i461.photobucket.com/albums/q...k/P6050006.jpg
http://i461.photobucket.com/albums/q...k/P6070013.jpg
http://i461.photobucket.com/albums/q...k/P6070014.jpg
http://i461.photobucket.com/albums/q...k/P6070015.jpg
http://i461.photobucket.com/albums/q...k/P6070016.jpg
http://i461.photobucket.com/albums/q...k/P6070017.jpg

I just don't get it....this over flow is supposed to be rated for 1200 gph.....but If i have the return pump on more then about 1/3 of the way it gurgles like crazy and makes a heck of a racket

Wow, do you have close ups of the tank itself???

I haven't taken any recent close up's of the tank.....kinda looks like crap atm......just moved it the other day to the new house.
After everything clears up I'll post a few pic's of it.

any updates? how's everything after the move?

Well....i'm battling a hair algae problem at the moment.....had a power outage that killed all of my SPS's except one (and it's not looking good)

But other then that the rest of my corals and fish are looking happy

You should drop in some time and check it out

An overflow that is rated for 1200 gph may not be quiet through the whole range of flow.

And nice setup! I hope my stand looks half as good when it's done :lol:

Thanx alot.....I put alot of work into making it.
But about the over flow.....shouldn't it handle more then about a 1/3 of the way open on a mag 12?

Usually I use a gate valve on the line from the overflow to the sump, and put it as
close to the sump as possible so i can tune the overflow and get rid of any unwated noise.
Most noise is just from too much air getting into the pipe.
My 2cents FWIW.

Aha! There's an excellent theory!

Is the noise coming from the water falling over the overflow, or from the pipe to the sump? More water moving through the pipe = more air being sucked through with it, like scooby said. Also, do you just have a plain bulkhead, or do you have a standpipe attached? If the noise is from the water falling over, adding a standpipe will reduce the height of the fall, and therefore the noise.