Those reused coco are buffered by nutrient solutions during grow. I'm not talking about them. Also I'm not talking about Ca-Mg supplementation during grow.
Have you ever grown in an untreated and compacted coco brick, the one has never been treated by intermediate manufacturers? If I'm not wrong, all coco products you American have access to are pretreated.
Have you ever had potassium deficiency in growing with coco without Ca-Mg supplementation? No. You have not, for sure
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There are many of us on this site that reuse coco and just wash it and not bother trying to buff it with cal. I just add a calmag nitrate during veg around quarter to half the recommended dose. It's worked pretty well for me and I am not experiencing issues with cal deficiency.
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Although I'm growing in coco but i needed potassium supplementation to prevent spreading potassium deficiency. Why? Because its nutrient solution had insufficient potassium? No, not at all. Because i buffered coco using calcium nitrate. I buffered it with too much calcium nitrate? Hummmm! No. I bufferd it using 1/4 of recommended amount just to make sure it prevents common calcium deficiency in growing with coco. But i got potassium deficiency instead of calcium. If you can't see this deficiency obviously it's because i reacted to it really fast before spreading.
This grow is a proof to well washed coco doesn't need buffering with calcium at all. No one told this to me. Or maybe no one even knew itLast edited by ZiroOne; 07-05-2024, 10:48 AM.
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