Good morning. 22x52uf 13k gallons bbb tf100
Here r test results
Cya ...ok this is where my questions are....this time when did test i saw a large black ring that circled around the middle dot but they didn't met, so when u say disappear u mean all turns black don't you vs. The dot suddenly being un-viewable. I was never quite clear on that.
I am hopefully finishing vac today then rerun numbers after adding back the five inches i can run filter while filling as long as level is above intake, but does the return ( eyeball) have to be covered as well?