guy incognito
Well-Known Member
I have 4 plants all started at the same time, 2 different strains, but all plants are showing the same symptoms which is brown spots appearing on the leaves, and some other "burnt" areas on leaves.
planted from clone in 6" pot with miracle grow moisture control and perlite (2:1) 9-21-10
fed tap water and used cfls for vegging on a 18/6 cycle
on 10-21-10 I transplanted it to 3 gallon pot and used 2 different mixes. One was fox farms happy frog soil with perlite (2:1), and the other was miracle grow moisture control with perlite (2:1), 2 plants for each mixture.
flowered under 400 watt hps, about 12" away. day time temps are getting up to about 80. I havent seen the temp drop much below 65F. watered with store bought reverse osmosis water (RO). I started the first week or so with straight RO. Then I fed a single time with about 3/4 dosage of botanicare pro bloom (1-3-4). I purchase cal-mag plus about a week ago and have been using 5 ml per gallon of RO for all waterings since.
The pH of my RO is 5.9. pH with cal-mag and nutes in any combination is 5.9 also. I have not tested the ph of the soil of the plants as im unsure how to precisely do this.
How would I go about checking the ph of my soil? or should I test the run off?
My last crop did this same thing, but much more severe.
It's happening on every plant. The pictures aren't coming out the clearest, but the rust spots are on many leaves.
Edit: this 1st picture is NOT the rusty brown spots im referring to. This only happens on a few leaves.
Edit: these 2 have rusty brown spots:
planted from clone in 6" pot with miracle grow moisture control and perlite (2:1) 9-21-10
fed tap water and used cfls for vegging on a 18/6 cycle
on 10-21-10 I transplanted it to 3 gallon pot and used 2 different mixes. One was fox farms happy frog soil with perlite (2:1), and the other was miracle grow moisture control with perlite (2:1), 2 plants for each mixture.
flowered under 400 watt hps, about 12" away. day time temps are getting up to about 80. I havent seen the temp drop much below 65F. watered with store bought reverse osmosis water (RO). I started the first week or so with straight RO. Then I fed a single time with about 3/4 dosage of botanicare pro bloom (1-3-4). I purchase cal-mag plus about a week ago and have been using 5 ml per gallon of RO for all waterings since.
The pH of my RO is 5.9. pH with cal-mag and nutes in any combination is 5.9 also. I have not tested the ph of the soil of the plants as im unsure how to precisely do this.
How would I go about checking the ph of my soil? or should I test the run off?
My last crop did this same thing, but much more severe.
It's happening on every plant. The pictures aren't coming out the clearest, but the rust spots are on many leaves.
Edit: this 1st picture is NOT the rusty brown spots im referring to. This only happens on a few leaves.
Edit: these 2 have rusty brown spots:
