Thats making me think im wasting my time bring my ph to 6.2 when my medium is buffered to 6.2 lol. Am I ?I'm using Pro-Mix Organic Garden Mix, the cheap 2 cubic foot bales from Walmart. home Depot carries it too. It is like 70% peat moss, 20% coco,10% perlite, and pH buffered. I'll also use Pro-Mix Premium Moisture Potting Mix (also from Wally's). It's a dollar more a bale. It's got a bit more peat and less coir than the Garden Mix. They both give me similar results, just depends on what's in stock when I need it.
I do not pH my nutrient solution. The pH is handled by the buffered soil-less mix. Last time I checked, my nutrient solution is normally in the mid 7's.
I do not have a layer of perlite on top of the res. It's 100% Pro-Mix throughout the bucket.