Flowering auto ak47 needs help

[Justin12421]

I have here a auto ak47 that i have kept in a server tower under a 70 watt hps. A couple weeks ago or so i had the top tied down with a string and i didnt tape it good enough and it flung back up and yellowed all over the side of the top of the buds. So i basically twisted it the other way to get the other side to grow. Anyway It kept getting yellow since that day and the yellowing has creeped up the leaves and is getting closer to the buds. I thought I would make it to harvest but the last auto ak i cut early and plan on cutting this one 50/50 amber trichomes for peak potency of the plant. This may not happen because Ill be forced to cut it if the yellowing reaches buds. Already looks like a pain in the *ss to trim.
I have moved the plant from the light since that day even left the server tower door ope a bit to make sure heat wasn't a issue. Any help please thanx? Nutrients have been the same as all my other grows except I havent added any urine this grow. I have never checked the ph level of the water.
Thank you for the help in advance
After looking over a plant sick guide I think I need to check the PH level asap.\
soil = miracle grow organic.... i know not getting miracle grow again
2.5 gallon deerpark jug

[PURPLE_TREES]

yea.. well a ph pen or kit should be your next investment. it is very key to keep ph levels stable. i would pull it and start again it looks super nute burned. even the spear leaves are burned. good luck with the next one.