DR0ck
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- Jun 29, 2026
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I'm on my first grow with 4 auto plants. Each are in FFOF. Two plants are roughly 5-6 weeks in flower, the other two are 3 weeks into flower.
But I'm seeing low pH in my soil (5.6-5.7) across all of them and they are all showing symptoms that I think I was mistaking for nutrient deficiency. 3 of the plants are in 3 gallon fabric pots and one is in a 5 gallon. The symptoms are worse in the 3 gallons. I've added dolomite lime and thing seem to be improving but only more time will tell.
Is this common? I thought I had read a lot of people use FFOF for a full grow for autos. I don't remember anything about soil ph problems. Maybe it's something unique with my setup? I always pH my water to about 6.5 and I'm not adding anything else besides ph down.
My next grows will be photoperiod and I really don't want to be dealing with pH issues. I'm considering using FFOF with some California super soil concentrate or some kind of super soil setup.
My main two questions if you've used FFOF
1) do you have similar pH issues?
2) do you ever have to feed otherwise? Either for autos or photoperiod
Thanks!
But I'm seeing low pH in my soil (5.6-5.7) across all of them and they are all showing symptoms that I think I was mistaking for nutrient deficiency. 3 of the plants are in 3 gallon fabric pots and one is in a 5 gallon. The symptoms are worse in the 3 gallons. I've added dolomite lime and thing seem to be improving but only more time will tell.
Is this common? I thought I had read a lot of people use FFOF for a full grow for autos. I don't remember anything about soil ph problems. Maybe it's something unique with my setup? I always pH my water to about 6.5 and I'm not adding anything else besides ph down.
My next grows will be photoperiod and I really don't want to be dealing with pH issues. I'm considering using FFOF with some California super soil concentrate or some kind of super soil setup.
My main two questions if you've used FFOF
1) do you have similar pH issues?
2) do you ever have to feed otherwise? Either for autos or photoperiod
Thanks!