Help Day 23 autos deficiency problems

[Cheech777]

Can somebody tell me what kind of deficiency this is? I’m using well water phd to 6 with Remo nutrients in promix hp except the cal/mag. Should I start using it? Pic was taken right after feeding which is why leaves are droopy.

 

[Heywood]

Looks like your leaves may be laying in wet soil at times.
That's no bueno.

Should you start using what? You just said you fed it... which indicates you are already using "it".
Are you talking about using CalMag? Probably wouldn't hurt,. I'd go with a light dose, like ½ teaspoon per gallon of water.