Mark C. One thing to add to Jason's informative advice. He mentions one can run airline upto 200 ft depending on number of diffusers. He is correct, but ... Friction and pressure loss of airflow through tubing is dependant on 1. diameter of tubing, 2. the volume of air (cfm) and 3. how far the air is being pushed. One can push 4 cfm of air through 5/8" dia at 10 psi for about 350 - 400 ft and then you start losing pressure (pressure drop) due to the drag/friction of air moving thru tubing walls. If you up size to 3/4" tubing one can push the same air 600' maybe 800' before noticable pressure loss is evident. NOTE - I may modify this 600 ft dist. later when I get my hands on the required air flow chart. AT that time I will also tell you how far the above mentioned air flow can be pushed thru 1" dia tubing. Stay tuned; back in seveal days. 11 Nov. Still looking; I will be back as soon as I find what I need. BC