I've checked for mites and I can never find any. What is the BEST way to check the pH? When I try to check the runoff I run into trouble because I can never get an accurate reading on plain R/O water! The guy at the water store that I go to says he's sure it's 6.5 but my meter can never get a steady reading. (Blue Lab ph pen) The first time I checked the runoff the PH was extremely low at like 5.3 or something so I flushed very well and gave cal-mag but the problem remained. Digital ph soil probe says that the ph is 6.5 - 7 depending on where i stick it in. I appreciate the help. I also noticed that the yellow spots are only in the margins of the leaves, making me think it's definitely not mites.
If pH is accurate, how much cal-mag do you recommend per gallon?
No i'm not. This is the first grow i've done NOT using FF. Thanks for the help man.
Hmm I was wondering because lately, FFOF has not been putting a large enough amount of lime and oyster shells to buffer the acidifying effects of the peat moss. If the new soil your using is a highly peat moss based solution then the best advice you can get is to give about 2 tablespoons of lime to your plants.
It has very little if any peat moss at all. I forget what its called I think its made by a company called Aurora. It worked great up until flower....
Ya its really confusing and hard to tell if its getting better, staying the same, or getting worse. I wish I knew how to truly test the pH of the soil.
15 months or years? Does your cal/mag deficiency normally look like that? Do u use R/O water and add cal/mag in those first 7 weeks?
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If it's spider mites shouldn't there be webbing all over the colas?
