Just to test things a bit further.
I again connected my single Vertex diffuser (the one not currently in the water) direct to my 5/8" line from my compressor and got about 8 psi. The one in the water consistently give me 10psi in 9' of water and sets my relief valve off.
I then took my extra stone diffuser which is probably 8 years old and hooked direct to the 5/8" line from the compressor and got a 1psi reading.
Looks like I will be making a call to see if Ted or his wife can give me some ideas. I feel bad bothering Ted knowing he is struggling with his health right now but would like to try to figure this out.
I'll keep everyone informed of my findings.
