Just a few considerations, Secure the schedule 80 tubing with more than zip ties (as is) the discs will float up on you at some point.I would also 90 degree down the hose barb for the weighted tubing and tie it off a foot or so down the rack,so it then can sweep to the bottom. I believe it will in time snap your fitting off, probably when you lower it in place, you dont want that heavy weighted tubing hanging "out" as the pic shows.Also try to get the unit on the pond bottom as level as possible as those diffusers will tend to put more air to the high side (less down pressure)Look'n good keep the pics coming !!
