Grow Talk

[Frozen420-MN]

SO i bought an R/O system. the main reason is the humidifier. I normally use 3 filter water for growing. i am using growdots i dont have to worry so much about the 200ppm water.

However, are there any tips for using r/o water as feed water? anything to avoid? which is better?

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Discussion

[retro]

I still had to ph my RO water for growing in cocco.

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[Frozen420-MN]

oh ya, ph comes out at 8.5.

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[jmystro]

Minerals buffer pH. No buffer with RO.

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[stanm]

I RO my water and life near where 35e and 35w come together near running aces. I ph mine and RO strips minerals so the main thing for me is adding cal-mag. Cal-mag is a running joke for people who can grow with their tap water but people using RO water need to be aware of possible cal-mag deficiency.

Aside from that I like using RO. It’s like starting with a clean slate. I PH every batch of RO I filter but don’t check it again when I use it. Mine normally comes in between 5.8-6.3 after I RO and I grow in soil and fertilizer is organic. Every once in a while when weather goes from dry to wet or wet to dry my PH can change.

• This reply was modified 5 months, 1 week ago by  stanm.

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