Nats wrote:How does that work, the grit size I mean?It's just like sand paper. The larger the number, the smaller the grain. So 30 grit is the smallest and 12 grit is the largest.
Is the larger number the bigger grains, or is it the other way around?
jamez wrote:I think most people want silica sand JUST BECAUSE it's just another ingredient people talk about. Perlite and silica sand are just as equal in my expereince.Not in mine. I used to grow my plants in 50:50 peat and perlite. I switched to 50:30:20 peat:silica sand: perlite and there was a noticeable difference in the health and size of the root systems on my plants. The sand tends to break the peat up better, not float and it also adds weight to the pot so that it doesn't blow or tip over as easily.
That being said, a 50:50 mix of peat and perlite (by volume) works very well.