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you could actually grow your plants in nothing but perlite (like a hydro setup), but using nothing but perlite is messy.

Should I be lowering the PH of the water I use to spray the leaves with? :?: ? I have it at around 5.8 to 6.0, and that made me do some stoner thinking :wall:... The plants like a slightly acidic fluid to help break down the food they eat, but they leaves don't need a break down so making...

If you're not using to much water, you could simply get one of those water filters you get from the grocery store (or one that can attach to your sink). That'll lower the PH below 7.0 as well as filter out some of the calcium deposits.