So i was playing with my regulator last night, I inject co2 straight into a sump pump, so i dont need high pressure for a diffuser, and i found as i lowered the output pressure, it reduced the sensitivy of the needle valve so i could adjust co2 in smaller increments it seems. Is there any downside to running lower pressure like this? My only thought is maybe this creates some fluctuation as the pressure is lower, any thoughts on this?