How many bags of MGOCPM for 20G high (after sifting)?
I'm currently working on the ordering phase of my first dirted tank, a 20 gallon high. I've currently got one 8 qt. bag of the Miracle Gro potting mix on its way, but after reading a bit more online, I'm wondering if I'm going to have enough after sifting it. I thought about maybe mixing in some leftover fluval stratum or Mr. Aqua soil to make up for what is needed afterwards, but I don't actually know if that's a good idea.
I plan on 1" of dirt and 1" of a gravel cap. So how many bags of this Miracle Gro will I need to achieve 1", after sifting, in your experience?