Fan leaves Browning and yellowing at top

[Basshead]

My plants at twelve weeks im.considering harvesting this weekend using organic miracle grow soil that's greenwashing and won't be using ever again I'm using led bulbs at 585 equivalent the tri combs are all milky but idk if to let her go further or not because my top leaves are getting bad but the buds are still growing so idk what to do at this point it's my first grow as well

 

[Basshead]

The bottom leaves are fine it's happening from top down here's a picture of the buds they look how there suppose to I think

 

[Basshead]

Also I'm using fox farms tiger bloom I've been using Evian water and epsum salts as my Cal mag Evian has eighty mgs of calcium in it and 25 mgs of magnesium

 

[Basshead]

And I've been using the tiger bloom every other feeding at a quarter of the recommended amount so one tea spoon every other feeding

 

[GoAuto6]

I'd say to hot, not enough cal-mag and your right on the soil being shit! I bet the ph is outa whack also! Pull it and start over.

 

[Basshead]

Thank you that was my thought it's twelve weeks it was my first one I've learned a lot through the process and I got way better soil now

 

[GoAuto6]

12 weeks she's a big girl, might think about more light, look for the actual draw not the equivalent wattage. Stretching is usually caused by not enough light. But I think you'll rock your next grow!

 

[Dichoti]

What strain is it?
Honestly, If you're all milky, she'll be ready to come down soon, So I wouldn't worry a whole lot. Depending on the buzz you like, it could be ready to come down between now and two weeks from now...
I like a heavy body buzz, So I'd flush, cut back on nutes in case that soil is shite, and wait it out, and hope for the best.
*edit*
I'm a little stoned, So if that's too nonsensical to make sense, Ignore it.

 

[Basshead]

She's a critical.purple thank you guys for the response I like the body high as well

 

[Basshead]

And yeah I noticed she's to tall and I did stupid side lighting for awhile until I found out how pointless that was