I installed Parker H3L about 2 weeks ago and it seems this metering valve would not fully close, I tried aligning the two ZEROs on the handle but the bubble rate would not fully stop.
The bubble rate I have currently is good even if this H3L would not close fully. But, I just wonder it cant be adjusted to zero rate bubble.
Is there anything I missed?
#23 VTS-253A-320, VTS 253A-1993
Eheim # 371 Ecco 2232 Classic 2213
"No CO2/poor CO2 & high light/ ferts = great way to grow algae" - Tom Barr