Mg Def -?- Flowering Day 25

So, I'm pretty sure this plant is showing Mg Def.
The leaves on the first two bottom branches have sides that curl inwards. Then the leaf itself starts to curl upwards into a ram-horn. The color has changed from healthy green to a brown/golden/dark green color.

It was watered 24hrs ago with epsom salt at a ratio of 1tsp:1gal.

Height: 17.5"
Schedule: 12/12
Temp, lights on: Avg 77, 48% (max 84F, min 38%)
Temp, lights off: Avg 65, ?% (min 63F, max 62%)

Doesn't look any better since epsom-watering 24hrs ago but doesn't look any worse. Any ideas? Should it be foliar fed? Can that disrupt bud development and/or erode young trichs? Supposedly, it's a NL.

Thanks RIUers.

Yo, straight up, I've been trying to upload pics for the last 2 days and it's not working... :/

Mg Def -?- Flowering Day 25
So, I'm pretty sure this plant is showing Mg Def.
The fan leaves on the first two bottom branches have sides that curl inwards. Then the leaf itself starts to curl upwards into a ram-horn. The color has changed from healthy green to a brown/golden/dark green color.

It was watered 24hrs ago with epsom salt at a ratio of 1tsp:1gal.

Height: 17.5"
Schedule: 12/12
Temp, lights on: Avg 77, 48% (max 84F, min 38%)
Temp, lights off: Avg 65, ?% (min 63F, max 62%)

Doesn't look any better since epsom-watering 24hrs ago but doesn't look any worse. Any ideas? Should it be foliar fed? Can that disrupt bud development and/or erode young trichs? Supposedly, it's a NL.

Update: Now, two more plants are starting to exhibit the same behavior.

Thanks RIUers.

Yo, straight up, I've been trying to upload pics for the last 2 days and it's not working... :/

Ump-Bay (Bump)...

(my bad on the repeat post but it let me get those pictures up)

It could be a few different deficiencies. What is the Ph of your water?

i hate deficiencies. This one needs to be solved within like.... seven days at the rate it is occuring.

The PH of the water is really a perfect 6.0 with nutes, no higher than 6.5 w/o nutes. Spring water.
These were transplanted into non-sanitized soil because of time issues; however, the original soil was sterilized. I'm thinking that this may have caused a PH issue so I'm going to monitor and strictly regulate the PH levels for a few days and see what the results are. Only PH ups and downs in "PH kit" form," Vinegar is unstable and easy to overdo - as I've learned before :/

Word... however, I'm still looking for any advice or reactions from RIUers

Thanks!