This regulator has never given me a single issue. I'm actually just here to buy another modular block because I'm setting up a new tank. Disclaimer: I've begun to have a growing love for mechanical things with no overlying software to introduce unreliability for no discernable reason. I've begun my decent into grumpy old man. I bought this thing here about 4 years ago ,got a filled 20 lb CO2 tank from the hydro store ,hooked it up to a 20 long, plugged it in and it's still running on the same cylinder ( the tank readout needle has barely moved) without a hiccup as I write this. It's nice to spend the extra money on a something and be more than completely satisfied with the purchase. To me this is a no brainier, high quality, made in the USA and between it's reliability and the fact that after dial in with nutrients, I don't even think about algae anymore , if you're on the fence get off of it.