I've had to mod my producer it was a learning curve to say the least. I installed double the air stones as I found there wasn't enough d/o, I also have a AHS automated pH/water doser but I'm waiting for a 3 lb check valve there will be more upcoming post including this piece of equipment. BCNL is very helpful on the phone no doubt but if I knew then what I know now I would have used the $7000 and built the ultimate room. If I can take anything away from this it's that it's thrown numerous situationso at me that in 5he long run has made me a better grower .