Anyone use this, should i add perlite to it or know how much if any perlite i shoukd add extra to it?

I will check.

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Yes. I will say its less expensive to buy Coco in bricks and add your own perlite, but this will work just fine. A block of coco which expands to 2.5 cubic foot bought locally is only 14 dollars here and perlite is 6 bucks for an 8qt bag. Shipping on these things will nearly double the price sometimes.