There are additives that you can use, and if you are mixing, be wary of soil mixes that contain a lot of wood fiber, as that robs nitrogen from the medium.
khyberkitsune Reviewed by khyberkitsune on . Mixing soil I'm on a real tight budget and I was just wondering if there was a way to get more out of my FOX FARM OCEAN FOREST by mixing it with another cheaper soil? Is that a bad idea? and if it's not, what other soil should I use? Rating: 5