Hello I asked this in my other post but thought I would ask it here aslo. I have an Eshopps 1000GPH Hang on Box for my Wet-Dry. I have three tubes for it two 1-1/4'' U-tubes that came with it and one 1-1/2'' U-tube that came with my second eshopps box by itself. (don't ask why I have two eshopps boxes one is going back) Ok here is my problem noticed last night I had my 1-1/2 and 1-1/4 both in going and when I checked on them there 1-1/4 had stopped and lost stuction bubbles were in it at top but my larger one was working fine. I restarted suction and hour later had stopped again? I have a Mag-12 in sump turned 40% down so it is not a pump problem. Is one 1-1/2 U-tube ok by itself and why doesn't it stop suction or loose suction with bubbles? This scares me! O yeh I had both 1-1/4 U-Tubes running for few days no problems so what is the deal and what to stick with? Thanks CD