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Old 11-11-2012, 12:33 AM   #12
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Generally with your lighting, it can last a few months.

Lighting is what drives the need of Co2 and Ferts

As with dosing, you can try the two more popular methods in this hobby. PPS-Pro or EI (Estimative Index) that was invented by Tom Barr (plantbrain on the forum).

I've used both and personally I prefer PPS-Pro as I'm a junior in high school and I don't have the time to dose daily. Setting up an autodoser (also viable with EI) and not doing water changes is the way to go with me
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