I just went and spent about an hour with the girls. They're happy now. I watered them, rearranged some lights, rearranged the girls, and took ph levels. Everything's holding at right at 7. Next watering, I'll add something to lower it. I added 1/4 dosage of Shultz Liquid Cactus Food (2-7-7) just to give them something to munch on while I figure out what's best to give them.
I rearranged them because the fan was blowing right on Veronica's big fan leaves and they were starting to show it. I trimmed some yellowed fan leaves on the bottom, took pictures, measured, and tucked them back away.
Left to right, back row, we have Minnie, Tessa, Veronica, and in the front row, IThinkICan, and Lisa.
I'll post measurements in a second.