Hmm.. I don't know exactly. The tube falls off if I tip the reactor over. If I look through the tube, I can see all the way around the reactor's inlet.
I do have some tube I bought last night. It's 7/8" diameter inside and 3/4" outside, I think. It fits the reactor more snugly, but I'm worried about using it since it's a thiner tube compared to the thick plastic on the filter's tube. Do you think it would be okay to use as filter tube? Is there a reason why filter tube has such thick plastic?
Guttboy, what size clamps did you use to hold the tube on?
75 gallon Rena XP3, 3WPG, 100% Flourite, Pressurized CO2, South American Biotope