Need some Advice

Leaves are curling in all directions and are browning on the edges, practically scorched. Started giving my plants flora series nutrients about 5 days ago but started with only half dosage, and water plants every 2 days in the cycle nutes,dry,water,dry,nutes,dry etc. I attached 2 photos. Advice would be really appreciated. (CFL) running 18/6 cycle.

Yeesh.. well I see a definite mag deficiency..... I don't know bout the crazily burnt tips, what's your temp like? You got a lot of air flow?

Run between 22 and 27 Degrees Celsius. Air circulation not the best

Heat stress and poor air circulation would be my guess. Get some fresh air to them. 1/2 strength nutes doesn't mean a lot to your girls. You should buy a couple of meters(ph,ppm), they are quite cheap now and will help you out.

Hey guys, Need some help
With how much nutrients to add to my lil girls, if I had a litre bottle of water, how many ml of bio-grow should I put in and how much of the litre bottle should I give to each 1 of my girls and how often =] thank you for taking time to read my question and would gladly accept any advice given =]