this is my autoflower, she's three weeks old and is showing what i believe is a deficiency. i have a couple of the same marks on two of my other plants. i mixed up 3ml of cal mag in a gallon and fed her half a couple days ago. since then i've seen two more leaves start to be affected. i'm going to check run off PH next water to make sure it's not lock out but i PH my tap that sits out for a couple days to 6.5-6.8. did i not feed her enough? how much should i feed her next water? 5 gallon pot 400watt hps 30% happy frog 30% light warrior seed starter 40% perlite 6.5-6.8 PHed water 40% humidity 80 degrees 20/4 light cycle
confirmed...definitely calcium magnesium issues. that's cal mag debacle leaves Sent from my SM-G600FY using Tapatalk
Flush well with 1/4 strength nutes until the cation ratio gets stable ..those leaves that fried won't come back ..it should stop and the new growth come out good...once this happens begin bumping up the feeding to normal over the nest week. good luck...keep us posted GFP Sent from my SM-G600FY using Tapatalk
i haven't fed any nutes yet. just root juice a couple times. should i do 1/4 strength cal mag?.. because 3 ml didn't seem to do anything.
If you haven't given any nutes that is the problem bump up the ec level to 1.2 or so and see how she reacts...I go all the way 1.5 ec in Veg and to 1.8 in full bloom. Sent from my SM-G600FY using Tapatalk
electrical conductivity..the measure of salts (nutrients) in your water. nutes are ialso measured on PPM parts per million. GOOD LUCK GFP Sent from my SM-G600FY using Tapatalk
i don't have anything to measure that. how many ml per gallon would you recommend i give her? it's general organics CaMg+ , and she's an auto.
remember to add the cal mag FIRST...then normal nutes after that. Sent from my SM-G600FY using Tapatalk
cal mag can act neutral if added on top of nutes. it depends on your water really .if your using RO water then it's certain to lockout if you add it wrong ..not the case with most tap water..BUT because tap water changes levels of shit frequently (chlorine) etc. I just always add it first...like the company recommends. GFP Sent from my SM-G600FY using Tapatalk
Just thought that I would add that excess magnesium can cause calcium lockout/calcium deficiency. As the leaves look like they are only suffering symptoms of calcium deficiency, I would only try to increase calcium or flush with 1/4 strength nutrients. A magnesium deficiency would show as a more uniformed yellowing between the veins of the leaves.