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Discussion Starter · #1 ·
I was wondering what is a good substrate depth for rooted plants. I realize it depends on the plant but is there a "safe" depth to shoot for? I'm trying to figure out how much I'm going to need to buy.
 

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Discussion Starter · #4 ·
Yea, 3" is what I figured. I used one of those online calculators to figure out how many pounds of substrate would be needed to fill a 2' x 2' area, 3" deep and I freaked out when it told me 196 lbs!
 
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