Spots on upper leaves

HellValley

Active Member

Dec 19, 2018

• #1

Noticed I have a few spots on upper leaves. Been watering when pot feels light. Growing in pro mix, feeding every other watering. Water with 6.2 ph. Light is a 600 watt hps. Using general hydroponics flora series and calimag.

 

shawnery

Well-Known Member

Dec 19, 2018

• #2

Looks like calcium but I'm not a pro at diagnosing.

P.s. post pic without grow light on.

 

HellValley

Active Member

Dec 19, 2018

• #3

I was thinking the same. But wanted other opinions. I watered again today and upped the cal/mag amounts

 

shawnery

Well-Known Member

Dec 19, 2018

• #4

Tap, distilled or ro water?

 

HellValley

Active Member

Dec 19, 2018

• #5

Tap. Well water. Runs around 6.8ph and 250ppm right out of faucet. I try and keep ppm around 700 when watering, this time around I upped the amounts and have just over 900ppm with a ph of 6.1. Roughly 3 weeks into floweing

 

shawnery

Well-Known Member

Dec 19, 2018

• #6

250 is pretty high. I would consider getting an RO filter if you can afford.

 

HellValley

Active Member

Dec 19, 2018

• #7

I will on next grow likely. This was my first grow.

 

Bernie420

Well-Known Member

Dec 19, 2018

• #8

Adding an amino acid product will help get the calcium in the plant. low dose and stop using a couple weeks before chop