Leaf issue

[Maxprime]

Growing in sunshine#4
Remo micro and grow
Gh calmag
Using about 3/4 strength and a ph around 6.5
This showed up about a week ago after it got cold here so I raised them off the ground thinking it may have been a cold root thing
Temps generally stay in the 70s otherwise with RH around 55
From looking at pics I’m thinking manganese deficiency but I’m a complete noob and thought I’d ask for some of your thoughts
As it progresses the brown dead spots increase significantly unfortunately I threw out all the really bad ones before I took the pics
As

 

[Jypsy Dog]

I would agree on the Manganeses.

 

[DaleW]

Imo the first thing you should do is drop the ph. That is a little on the high end. 5.8 to 6.1 ime is ideal.

 

[Maxprime]

Imo the first thing you should do is drop the ph. That is a little on the high end. 5.8 to 6.1 ime is ideal.

I’m confused everything I’m reading says your suggested ph level will be problematic With phosphorus and potentially other things as well.
As stated I am a noob so maybe I’m being dumb but would you care to elaborate on the ph? Or point me in the direction of some literature , I appreciate your response just want to make sure I’m following the right advise

 

[CanadianJim]

I’m confused everything I’m reading says your suggested ph level will be problematic With phosphorus and potentially other things as well.
As stated I am a noob so maybe I’m being dumb but would you care to elaborate on the ph? Or point me in the direction of some literature , I appreciate your response just want to make sure I’m following the right advise

He's giving you the ph for coco. In soil 6.3 to 6.5 is good.

 

[Maxprime]

Ahh ok. Turns out I had been neglectful if my ph pen and it was out by .3 so I’m hopeful by doing can just resume Watering with my regular nutes and it will correct the twelfths

 

[DaleW]

I’m confused everything I’m reading says your suggested ph level will be problematic With phosphorus and potentially other things as well.
As stated I am a noob so maybe I’m being dumb but would you care to elaborate on the ph? Or point me in the direction of some literature , I appreciate your response just want to make sure I’m following the right advise

Yeah I use a coco peat mix (bush doc or strawberry fields) about 40/60 and that 5.8 to 6.1 has never failed me even when ive used pro mix. Just my experience though.