!st Grow Need opiinions and intput on possible yield

Im using 3 gal pots with fox farm ocean forest and 1 600w Hps for flowering in a secret jardin tent and inline fan etc. I vegged with sunlight supply 8 bulb cfls. I have been using fox farms big grow, tiger bloom and big bloom. I noticed in the past week the leaves have been curling up and look as if they are dying. maybe cal mag deficiency, PH or other.... all input and help greatly appreciated THIS IS MY !ST GROW AND IT IS BAGSEED. THANK YOU! ALSO LIKE TO KNOW WHAT MY POSSIBLE YIELD IS ON THESE 4 PLANTS

Looks like you need some cal mag but it's hard to tell. Could be a little heat issue as well,
And if you get this problem straightened out you'd probably get between 35 and 48.6 grams per plant dried and cured.