just a thought. I really like the way the polyester works for my plants. I have the bottom of the netcup being sprayed 24/7 and the plants are loving it.
it wicks just enough while still draining enough to prevent drowning.
I would give it a test if you are concerned about water retention. It will probably be comparable to coco, but I would think it a little cleaner. but I havent used coco so I wouldnt know directly. I just know my lettuce and tomato seedlings are loving the STG cubes and the polyester fluff I have them in. and the $5 i spent on the bag will probably last me years lol.. I underestemeated how far it would go and baught 2 bags, I am not sure I will be getting to the second bag for a while, but I still have a few herb setups to do, and my new lettuce plants to get going.
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