Quick introduction. Just switched 6 critical jack to 12/12 after 24 hours off. 7/8 weeks of veg. Had it reasonably rough during first 5/6 weeks (this is my first grow). Nitro deficiency, cal mag deficiency, nute burn et al. However i persisted to try get my plants in good shape before i switched to flower (which i nearly have apart from after effects of problems mentioned above) Any hints tips advise watch outs welcome over next period. (Run down) 600w hps, canna terra, grow tents 1.2 x 1.2 x 2m grow tent, carbon filter, vents tt fan, Osolating fan. Temps 70 - 80f, humidity 60-70 (should i be looking to reduce this yet?) Nutes; bio grow, bio bloom. Added plant magic cal magne, canna nitro, canna micro. Thanks for taking the time to read. Ive got to opportunity to completely design a grow room from block inwards so hoping to pick your brains and get ideas on that at some point!