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I can not get this to work for the life of me. I understand chlorine can be dicey on plants and I saw that people were saying cannabis can handle up to 4-5ppm chlorine just fine in a sterile rez. I tried 2-4ppms. No luck. The roots refused to submerge. This is from seed with a rapid rooter. So I...

You need to test their strengths before you start because they could be degraded. I just tested some brand new bleach and it was around half the strength on the label. I know a lot of sterile growers use powdered pool shock but I don't know if that degrades over time. Bleach definitely does. I...

My tap water tests very high (650-750 ppm) and I'm looking for a RODI that can handle a 17 gallon reservoir with that tap water to work with. Will cheap RO buddy cartridges be able to handle that? It's my first grow so I thought I would start small but what do you recommend?