Yellow/Brown spots, Day 35.

[Funky Trichomes]

Problem: Lower Leaves fully yellow and drying out and some leaves higher in the canopy have some light yellow spots and the occasional brown. There are only a few of these fan leaves with these spots I would say 2-3 out of the whole plant.
-Medium/grow method: Westland & John Innes multi purpose compost and a little Westland seedling used at the start.
-Feed and supplements used: Bio Bizz Grow, Bloom & Topmax. Cal Mag Shogun Nutrients. I feed a liter every two days, every other feed is nutes the other is just plain water. When I feed nutes it's 0.25 cal mag, 1ml grow & 0.5ml of Topmax and bloom.
-Water source: Ashbeck Water pH 6.2-6.3
-Strain: blue treacle 35 days
-Climate: night around 20 celcius and day 26 max. Rh is 60 at night and 50 during the day.
- Light used: HPS 600W 24 INCHES.
-Additional info: Gradually getting worse I would say but it is slowly getting worse. The bottom leaves are very yellow and dieing but they don't get any light or anything so I'm guessing this is normal... The spotting on the leaves doesn't seem like pests I've looked under the leaves and haven't seen anything..
- Pictures:

 

[Funky Trichomes]

I apologise for not taking the plant out the tent and not taking pictures with the flash on etc but the way the tent and stuff is positioned its got to big to take out and moving the tent will unplug a few things etc. The spots are yellow and it kinda looks like chunks are taken out the leaves in a way... Pictures attached are the very low leaves.

 

[namvet25]

If they are the very bottom leaves this happens somtimes due to low light conditions at the bottom of the plant.Remove the bad leaves and it should be fine.

 

[Funky Trichomes]

If they are the very bottom leaves this happens somtimes due to low light conditions at the bottom of the plant.Remove the bad leaves and it should be fine.

Okay, I'm thinking the other leaves with dots on could be due to a calcium deficiency, I haven't been given it to much calcium. Maybe potentially bugs instead? Not seeing any though, would a spray of neem oil be stupid during flowering?