recommendations

I have a 3x3x6 grow tent in a barn(lol). with a 6 inch inline fan running 24/7 on 25% and growing in Happy Frog soil. I just switched to flowering and my humidity is at 75 and temp around 80. I want to get a dehumidifier but I am afraid it will make my tent even hotter. Any recommendations for...

Can anyone give me advice on this? It looks like maybe cal mag toxicity or deficiency, can anyone confirm. Feeding all my plants the same nutes and this strain which is a master kush from Canada seems to need different attention.

This plant has been weird since the beginning, but now I think there's an actual problem. I say this plant has been weird because when I topped it, it grew 4 new colas and what almost looked like it tried to go for 5. On top of that some leaves have grown all fucked up looking. This is the only...