Need help please Plants are dying quickly :(

So this is my second grow indoors and all of a sudden the last few days my plants have started to die it's been getting worse by the hour!! Please help me diagnose this!! . I have 3 plants. Platinum Bubba Kush is 11.5 inches and the 2 Tahoe Thunders are 9.5 inches tall. I feed them a mixture of synzim, super thrive, 1/2 strength miracle grow nitrogen advance for the nitrogen an I use sensi grow for my base. I have 2 100 watt energy safe cfls hanging at different angles surrounding the plant from above. Then hanging directly from the top I have a 2 250 watt bright white bulb that says up to 4000 lumens but average 3350. I also have a 36 inch fluorescent 17 watt fish tank light on the bottom of the tent facing up to get Btw it is in a grow box that's 3 ft wide and is 5ft tall. I have tin foil covering the inside and I have 2 oscillating 6 inch fans blow to keep them cool.
That's all the information I have. I also noticed what I thought were spider mites so I used this organic solution I bought. It was a soap. I used it kinda a lot. Used it 3 times in a few hours and once more the next day. I also think it is also overwatering. Idk but anyone know what's the issue?!




any help and guidance would be greatly appreciated thanks!

Too much heat?? what is the temperature in there? or did you over feed her with nutes? its def not overwatering!!!

Yes I did feed her with nutes and came back from work and found it nute burned at the tips from too much superthrive so I flushed the plants decently. That was 3-4 days ago. This issue just started. You think the close fishtank light is an issue?

Looks similar to light burn I get from clfs touching my plants, Temps? Also I know tinfoil can create some intense hot spots and yours is fairly crinkled so possibly focusing light and burning your plants? Just a thought. Also did you spray this spider mite solution with your lights on? The water creates a magnifying glass effect and the light will burn your plants. Just another thought.