PS:
Mark, if you have not committed to a package aeration system, you can put one together yourself at big savings.

Bill Cody provided me with the information and components for bottom membrane diffuser aeration for about 50% of a package system.

I would not use the thin wall polyethylene tubing � I used heavy duty garden hoses for airlines and weighted with bricks as stated above - kinks were not a problem.

If cost no concern I would go with the non-kink weighted airlines.

I have pictures of components and pump cover if you would like to see them.

George Glazener