yellowing from the bottom up and top leaves are curling upward

Heres a picture wow u can't c it. well the very bottom leaves are yellowing and the next ones up are starting to too, the top leaves if you look closely are burnt facing upwards around edges and all the leaves are drooping a little (especially the newly forming branches). Using a 750 watt hps turned down to 50% today cause i think it burnt the top leaves? dynagrow bloom twice and its been "flowering" for a week with 2 weeks or so in veg. i'm using scotts hyponex soil which i heard wasn't the best but worked good with a some nutes. Getting ready to go out and get a fan but i don't have the money for ventilation and can't really do it anyways since its a closet grow and i'm not trying to tear the walls up.
Let me say that this was not planned lol, threw a seed in a random house plant and this popped up so i'm going to hurry up and flower this and then start a real batch. second grow and the first one was only veg and moved outside.

my advice throw it away. see the 3 finger leaf ? its garbage. odds are it will herm or spit out seeds on you. if you did get it under control its more then likely a total waste. if you bought that as a clone bring it back and throw it into there face . also stop murdering the electricity . im not trying to pick on you not trying to be an ass hole. im telling you that plant was cloned way to many times or you planted some seeds from a herm plant , suggest just starting over . sorry

heat stress curl the leafs on top. yellowing from the bottom up . feed it nutrients . like a 10 10 10 and raise the light .

lol it hurts but advice taken. didn't want to waste it..waiting for the return on my broken mh and then buying a tent or maybe just giving up...to hi to decide at the moment.

I don't think that was a clone was it? It looks as if you sprouted a seed; in that case three leaf patterns are common after initial sprouting.

If it was a clone wow.
Transplant her into something bigger cool her off and then think about it.