magnesium deficiency

Hello! This is my first grow and I’m running three strains in a 5x5, just one big plant for each strain. Fire OG, Platinum OG, and Gorilla Glue. The Fire OG’s tip leaves look a little yellow, and I can’t tell if it’s a nitrogen deficiency, Or interveinal chlorosis from a lack of nitrogen. No...

Hello everyone i am on the 12th day of flow. I found some leaf that yellow and orange pointed but not much .. i use advanced iguana juice bloom, ancient earth, Mother Earth tea bloom and bud candy regularly and using cal-mag just one in a week by the way its normal Plagron Lightmix soil then...

This is my first grow in coco. I purchased a brick of coco, washed it, and buffered it with cal mag. Seeds sprouted in about 48 hours and now I'm on week 4. I'm feeding them about 500 ppm of GH Flora nutrients and cal mag ph'd to 5.8. What am I missing? Temps are right at 70. Humitity varies...

I'm growing in 5 gallon DWC buckets under a 315w cmh light, using Floranova Grow/Bloom, along with GH Calimagic as needed. My plant's are just over 4 weeks old, and about 1 week ago they began to hit a very serious snag. My PH initally was kept at 5.8, but since the appearance of these symptoms...