drain pipe noise

[bgraves]

I have a 55 tub and just filled it with water and checking all equipment. Everything seems to be working fine except the gurggling noise from the drain pipe. How can I correct this?

[walkthedog]

If you drill a small hole in the top of the drain pipe it should help. Start with a very small hole and make larger if the noise don't stop. Worked for me and won't mess up the drain. If there is much back presure then you may get some noice like a flush. Make sure pipe is not blocked and try to avoid lots of turns on the drain pipe.

[46FiatYamaha]

http://home.everestkc.net/jrobertson57268/HGB/HGB_construction.html you can try one of these, very cheap and easy, and keeps my standpipes dead silent

[bgraves]

thanks for the info. I redesigned it and it seems to be working.