GthaEnigma
Canna-Arborist
I use about 10-15 % of the pots volume as a starting point, water slowly from top, observe til next watering. If any one shows signs of underwatering i adjust the amount i give that one. I do it by memory but journaling adjustments is a good idea. You will find the sweet spot for each lady pretty quick. Their needs are all environmentally influenced so if you have a temp or humidity spike or drop, they may change their usuage. It is an experience/judgement thing you will get better at with time and hands on.