Ok, I did some more math.
Peat Moss 3.8 cuft bag :$10
Perlite 4 cuft bag: $12
Labor 1 hr: 12.55
Total to make and mix: $34.55 for 7.8 cuft. = $4.42 per cubic foot
Promix HP $30 for 3.8 cuft bale. $7.89 per cubic foot.
So i could save around 44% if I make my own.
Still need to figure on some limestone and wetting agent, but the above calculations tell me I need to go this route.
If my costs above seem low, I get everything at wholesale direct from the distributor due to my parents having a garden center.
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