Sorry, Greg. for the Porcupine Spheres, my conscience will require to me to post all comments and observations -- good or bad.
BTW, I love this AquaPro 75-D Feeder. My Mom seems to have become addicted to watching the fish eat and calls me to give daily fish feeding reports.

The 65 year old woman sounds like a teenager, when she talks about the Catfish whiskers poking out of the water. I found her a day old bread store, so she's really happy, now.
Since I bought just the spheres from Greg, I went to Home Depot and bought 170 feet of 1/2" PVC pipe and a fancy-smancy PVC cutter. It beats the heck out of using a hack saw.
I was hoping to get all 12 spheres installed this weekend, but the residents have taken me up on my offer to help put a new roof on the Recreation Center. To avoid any grief, I need to sink the spheres, when no one else is watching. Besides, I want to hide my honey-holes, around the two piers I fish from.
Deaner, you're right! I don't know where that discount thought came from. It must be these allergy medications making me a bit daffy. It's so bad down here, right now, that all the cars have a yellow tint from the tree pollen.