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Hydroponics and PPM

Quick easy question for seasoned growers:

PPM. What should your ppms look like during bloom through to harvest.
Of course there are many factors with strain and other variables. I'm just looking to hear if there are any rule of thumbs for this.

I just changed my water and my ppm is 730. Before my change I was at 1300. They were happy as hell.
I usually add to the res every day until I get to about 1000 then I add ever few days until about 1200.

I go weeks without changing. Running...

Hydroponics and PPM


from Hydroponics / Aeroponics https://www.rollitup.org/t/hydroponics-and-ppm.1026899/

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