I wouldn't suggest anything smaller than 3/4" but if you want to try 1/2" make 2 and use one in each corner. 1/2" would be very easy to clog and then you'd have water everywhere. Having 2 will give you a little insurance.
1. Use the pipe sizing thread in the sticky section of this forum.Ceahorse;2673883; said:... It didn't keep up...
... Does the depth matter much..
Just to clarify, the airline should extend below the T.ward1066;3324563; said:I know this may have been mentioned before, but if you ge a lot of noise from the air intake tube, I found that if you put a piece of airline tubing down to the "T" on the intake it really helps a lot on that sucking noise.