Originally Posted by jackspratt61
I only have experience with results from Spectrum Analytics ...send your sample and ask for the k-3 test...about $52. They will run a 8.2 test which will show the available Calcium...with this Calcium # you can then balance nutrients and metals. Looking at your plants and test I stand with P shortage...low-fat powdered milk with a high P fertilizer will definitely help. Also in advanced growing section there is a thread called "slownickel's lounge..." study that thread...particularly concerning Calcium and base saturation.
Thank you very much that thread is leading me in the right direction. Mostly my problem now is yellowing too early in flower starting around week 3.