A bit of light & heat stress up top but guess thats what ya get when you have the hps 4 - 5" from the tip lol Received its 2nd top dress of gaia green last night so hopefully good for another 3 week's then let it do her thing and fade away 
i cant help you with soil sorry broAnyone ever had this nonsensical deficiency?? I thought I was seeing some new growth up top looking really pale green compared to how it was growing! Finally got in and inspected and some spots I hadn’t seen that looked worse!
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Was guessing at 1st til I saw leaf in last pic! Starting from new of leaf moving out so either sulphur or manganese but says sulphur makes funny colored spots on bottom of leafs so my guess is manganese for the win (not a win but hey figured it out)! I’m thinking using the Agsil16 not only at waaaay higher rate than I was supposed to (labeled wrong) but also never ph’d solution afterwards and just heard yesterday the silica in it shoots ph up so prob too high of ph in medium locked it out! Need to test soil ph but this is kinda making it difficult to get soil for slurry sample.....
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Should I just rip some roots up so I can test soil cuz it’s a solid mass just below surface?? I’m too poor to afford a good bluelab soil ph probe!
I know how to fix it I’m just trying to get some backup on my decision to tear some roots up so I can get an accurate slurry reading of my ph? May not have any other option!
