I'm new to growing.What does ppm stand for.
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Critical Mass - Oaseeds
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Critical Mass
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Day 1: New run! I'm growing 4 plants in 16"x24" area. I'm also using a 13 watt 10.0 UVB light.
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Ritamurp1495commentedweek 65 years ago
Ritamurp1495commented5 years ago
@BarrieGrower,thanks
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BarrieGrowercommented5 years ago
@Ritamurp1495,
Parts per million. It's used to measure the quantity or amount of minerals in the solution.
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