charlesiii
Active Member
Looks like the same problem I had. I'm telling you that you need Cal/mag to grow hydro with fox farm and r/o or distilled water. Tap water is unbearably hard in my area so I had to use distilled water.
My plants looked the same, couldn't find a solution for the life of me. Killed my last grow and did alot of research, and this time when the problem showed it's ugly face I gave em some ca/mg and it stopped the spreading; new lush growth began about three hours after the initial dosage, this stuff works fast!
Look up the thread kp gets her feet wet, she has the same problem, it's not well documented but it was there. I had the same exact problem and the solution was cal/mag. It starts with dark green or discolored patches that turn yellow or brown. The leaves begin to dry and whiter. At first I thought it was a humidity problem, mine was at 30%, changed it to 50%, didn't help.
I don't use a ppm wand either, this is hard but with hydro the plants show signs of over/under nuting pretty fast. It's these strange anomolies like ca deficiencies that will bury your grow without a ppm meter. Watch your babies closely, multiple times a day. Just spend some time admiring their color, give them some of your co2 enriched breath.
Good luck, by the way I didn't really explain cal/mag properly it's got Nitrogen,Calcium, Magnesium and Iron. Pretty sure those are the most common deficiencies in hydro so it's like training wheels.
P.S. to get your approximate starting ppm apply the same math as the dosing. i.e. if at full strength the ppm is 1200 and you used 1/4th ff, just take 1/4th of the starting ppm (1200) and you get your actual 300.
Like I said i'm a newbie but also an educated college graduate.
My plants looked the same, couldn't find a solution for the life of me. Killed my last grow and did alot of research, and this time when the problem showed it's ugly face I gave em some ca/mg and it stopped the spreading; new lush growth began about three hours after the initial dosage, this stuff works fast!
Look up the thread kp gets her feet wet, she has the same problem, it's not well documented but it was there. I had the same exact problem and the solution was cal/mag. It starts with dark green or discolored patches that turn yellow or brown. The leaves begin to dry and whiter. At first I thought it was a humidity problem, mine was at 30%, changed it to 50%, didn't help.
I don't use a ppm wand either, this is hard but with hydro the plants show signs of over/under nuting pretty fast. It's these strange anomolies like ca deficiencies that will bury your grow without a ppm meter. Watch your babies closely, multiple times a day. Just spend some time admiring their color, give them some of your co2 enriched breath.
Good luck, by the way I didn't really explain cal/mag properly it's got Nitrogen,Calcium, Magnesium and Iron. Pretty sure those are the most common deficiencies in hydro so it's like training wheels.
P.S. to get your approximate starting ppm apply the same math as the dosing. i.e. if at full strength the ppm is 1200 and you used 1/4th ff, just take 1/4th of the starting ppm (1200) and you get your actual 300.
Like I said i'm a newbie but also an educated college graduate.