Possible magnesium deficiency

[chuck1718]

What Strain is it? Auto Assassin
Is it Indica, Sativa or Hybrid? What percentages? sativa
How Many Plants? One
Is it in Vegetative or Flowering Stage? flower
If in Vegetative Stage... How Long?
If in Flowering Stage... How Long?
Indoor or Outdoor? indoor
Soil or Hydro? soil
If Hydro, Reservoir size?
If Hydro, Reservoir Temperature?
If Hydro, what type of Medium?
If Hydro, what type of Setup?
If Soil... What is in your Mix? Super Soil
If Soil... What Size Pot? 5 gallon
Size (Wattage) of Light? How Many? 300 led about 12 inches away or so
Is it Air Cooled? Yes
Temperature of Room/Cabinet? mid seventies at day low seventies at night
RH of Room/Cabinet? 50 ish
PH of Medium or Reservoir? 6.7
Any Pests? Not that I can see I use mosquito dunks and haven't seen webbing of any kind
How Often are you Watering? When need pot lifting to tell but about every 4-6 days
Type and Strength of Fertilizers used? 50% peat moss 25% EWC 25% perlite 1tbs blood 2tbs bone 2tbs kelp 2tbs azomite 2tbs lime per gal
Size or Square Footage of Room? 4ftx4ft

Seeing some dots and yellowing day 41 hitting flower heavy center picture has some purple leaves I accidently left a window open for 2 days and night hit about 50 degrees.

 

[chuck1718]

This is show the purple it looks black on other picture but it is not.

 

[NuttyProfessor]

phosphorus id say

 

[chuck1718]

Alright I fed yesterday I gave two tbl spoons of 0-4-4 bat and a good dose of molasses think this will curve it?

 

[NuttyProfessor]

try mark the bad leaves see if it spreads, give it few days , if that dont work , flush her, make a nice tea with the bat guano

 

[2clean]

do this...
flush with ph water for 1 or two times.
second feeding ad half strenth plus 5ml cal mag.
3rd feeding and on go back to regular.

 

[2clean]

plants always have problems in the middle of flower usually caused by lock out..

 

[chuck1718]

Only thing I have been giving it is water expect one feeding should I really put that much more through it without trying to feed a little extra?

 

[2clean]

Prob need a lot more CalMag. Ph too