Coco coir - Flora flex - Custom LED

All WAS well until I noticed severe foxtailing I guess you would call it on 2 of the girls :(. This leads me to believe it can be 3 possible reasons. My thermostat was mostly between 70-75 the past two weeks I'd say I added a cheap heater BC my temps were steady in the mid to high 60s. Thermostat isnt the best and I opened the tent twice where the temp was at 86, for how long who knows. I check my tent several times a day tho. Im running Bridgelux led strips which I brought up to 140watt last week at 15inches from canopy from the tallest branch. Doesn't seem like much at all for a 3x3 tent so I'm not sure about that. Brought it back down to 120W just in case Not enough air flow. I had one computer fan (100cfm) running in one corner. That I had in my 2x2 tent which seemed to be sufficient. I forgot I was over doubling the space in the 3x3. Added another 2 fans. From what I read there's no turning back from this issue. I hope I read wrong lol. Gave a nice heavy feeding of B52 aswell. Any comments would be greatly appreciated