Deficiency or too many Nutes in week 5 bloom?

I fed these 12"-17" bloomers yesterday and upped the nutes by 1/4 ml per liter. Using AN sensi bloom A and B, Overdrive, and B52. Total of 1.5ml/L. PH in and out at 6.3. PPM was 815.

One leaf on a few of these plants has turned bright green or yellow with brown spots.

Soil is 60 happyfrog and 40 perlite.

Too much nutes, too soon. Just give it water next two feedings, and try to bring the PH up to at least 6.5, 6.8 being best. Just saw your PPM, and the nutes look ok. Betting its your PH.

Sorry. New iphone system won't upload pics.

Will follow today.

Thanks budfarmer. I had nute in the first couple weeks (lesson learned) and have kept the nutes at 1/4 strength ever since (1ml/L).

It's funny how different they can react at different stages. The first time the leaves got all twisted and the tips died.

Having flushed and stabilized them, I started to think "I've got this now"... But not so much. Lol

Now I'm in week 5 of bloom, feeling like the home stretch and watching the buds swell more every day. I figured a tiny extra bit of food might help the process.

I need to learn more about "less is more", but it's such a patient man's game. Lol

looks like your doing well, but check into K def/ toxicity during flower. I have had similar issues during flower. Once I get the money, Im defanitily going Organic.

Still can't get pics up, but here is the running journal.

Thanks again bud farmer.

https://www.rollitup.org/t/newbie-first-grow-apollo-13-grand-daddy-purple-sog.843304/#post-10901990