Some points:
1. Fabric pot+aerated soil (like 40% perlite/coco aeration) will act like an evap cooler always transferring water to roots/cool sides of the fabric and all thise movement and aeration supplies enough o2.
2. Small plants need little water or anything so u can top hand feedem till they get bigger.
3. I switched to black saucers they stay cleaner because of less algae growth IME.
4. Organic is e z and means no drain to waste or runoff needed.
5. Once established just place the driiper in the tray.
6. Dont ever let it sit in water, it will look like it and suck it up in few hours.
7. u want some wet dry cycle but the fabric sides should always feel cool 3/4th down.
Hand weigh the bag when the plants are looking perky thats where a little heavier to a little lighter is ok.
The more often u can water in small amounts while allowing some dry wet cycle is what gave me the best buds.
The pulling O2 stuff is really for Hempy and non organic to pull all the salts down from the top.
There are salts in tap so i recommend watering it outside to runoff maybe once a month.