A bit late on this post (today 18/22)...
Reporting on week starting 10th Apr 22).
The ladies did well again, all showed and increase in size, 1 lady is lagging behind a bit though.
I'm still battling with big PH swings, so I test every 2 days and readjust and top up with plain water as needed. Each lady requires +/- 1 top up per week.
18/4/22