Problems showing on the leaves

[DavidB999]

Hi. I'm a newer grower. I would appreciate any suggestions on the problem showing on the leaves. Here are the details.

4 Do Si Dos photo period plants
Indoor tent grow
LED light
Soil mix 80% Happy Frog 20% Ocean Forest
5 gallon cloth pot
RO water

4 weeks in. The pics show the symptoms that started to notice 2 days ago. The only additives I've used so far is GP ProCal. The water has been ph'd to 6.3 to 6.5 after additive mixed in.

 

[Pbass]

Hiya @DavidB999 does that GP ProCal have magnesium in it? It looks like what I'd see with a cal/mag issue to me. CHeers, gl!

 

[DavidB999]

Hi Pbass yes it has 2% Nitrogen, 1.5% Calcium, 0.5% Magnesium plus trace Boron, Iron, Manganese and Zinc. Perhaps I'm a little light on the dosage by being overly cautious.

 

[FelipeBlu]

High David!

It looks like the beginning of Mg def, which I start seeing before N def. To me, it’s a sure indicator that I need to increase the nutrients. FFOF and HF have nutrients included, but by 4 weeks, you will likely need to start fertilizing.

 

[DavidB999]

Hi FelipeBlu thanks for the advice I'll get on that!