wtf they're only half done dont through out anything man, the electric is cheap too, 1000w hps adds $30 to my buddies bill, its still cost effective to grow, you'll get a lot more pot for cheap.
i can help you increase your yield 2 fold at least, just listen;
i see Calcium deficiency, to fix this feed every 3rd watering with cal/mag. if you dont have any thats fine, then grab some unsulphated molasses, its also cal/mag feed, feed 1tbsp per gallon every 3rd watering.
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i see K deficiency; singed tips is the early stage, i bet most of the leaves have it. late stage it starts getting rust spots.
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the thing about K deficiency is that; K is the most essential nute imo, it controls water uptake(essential for all the other nutes),
and it controls fruit growth, size, density, taste! your want to see some nice nugs then go to the store and get any fertilizer thats balanced but leaning towards K. heres some examples;
-shultz rose food 18-24-24 (use 1.5tsp("half strength") per gallon = 9-12-12)
-miracle grow tomato 18-21-21 (use 1.5tsp("half strength") per gallon = 9-10.5-10.5
-flora nova bloom 7-4-10 use 1.5x full strength = 11.5-6-15
i would use the first two since their more balanced and you are flowering, they'll give you better results, especially the shultz rose food.
OR you could by some mirate of potash 0-0-60 and add it to your existing nutes
by the way what do you use for nutes... i think you may use a little too much... well see