FourOaks, I like what you're telling me here, I just wish I had access to those coco chunks. If you're able to use coco coir without perlite in your more humid climate, I will certainly be able to use less than 25% perlite. Excellent news in itself, coco is half the cost of perlite, and I'm probably increasing growing efficiency. I've got some Red Robins to pot up soon, I think I'll even try one with 100% standard coco coir. Also 10% and 20% perlite.
Even Promix is moving to coir blends and reducing perlite, PromixHP CC is a newer product, I think AKmark is trying a few bags. The MSDS says it's 65% peat/25% coir chunk/ 10% perlite. The standard PromixHP is 30% perlite.
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