Rollitup is Broscience, it spreads so much bad info it feela like if you dont have leds, boveda, uv and jar after five days your not a real grower. No one understands herms, pointlessly ph'in soil and basically hype'in everything before working out its rubbish then sneaking off acting like that wasnt you talking shit about leds a year ago or writing how leds need extra calmag.
You can disagree but i can get proof real easy and quick on most stuff and members who seem totally confused by the broscience.