I go from 8.30 to 8.32. I also run reverse lighting on a huge fuge on the 180s.Looking for input on PH from group here. Since my system swap my PH has been pretty much locked in. Big skimmer had me running into high 8.4's with minimal swings in thousandths.
Swapped out that with smaller eshopps skimmer. Since fresh water change yesterday that put me at 8.32 initially but after cpl hours ive been pretty much locked in at 8.25. No swing with lights out.
I think @Eagle_Steve has locked his PH in.
Who else monitors PH closely and doesn't see swings?
My old system would swing 8.2 lights out to 8.3 full daylight
The angler tank, even with out a fuge is 8.1 to 8.3.
The macro grow out is the crazy one. 8.5 during day and 8.1 at night with the small sump fuge for delicate macros being lit up.
All are rock steady though and I don’t consider the mixed reef tanks as much of a swing lol. Even the angler tank isn’t that big of a swing.