Possible calcium deficiency, might need help 😰 first time grower

Hey guys, I’m a first time grower and I’ve got 2 White Widows (pictured left and middle) and one random seed (pictured right) and they’re in their 5th week of flower. There are obvious discolorations in multiple leaves on the White Widows, but not too much on the random seed. I’ve convinced myself that it is a calcium deficiency, so I’ve been feeding the plant Liquid CalMag every other feeding as directed by the manufacturer, and I began giving the plants CalMag when I flipped them to 12-12. The discoloring has progressively gotten worse, but the bud production has been good from what I can tell. Can anyone tell me if there is anything else I can do or am I worrying too much? Thanks everyone!


Beautiful plants. I’m a noob myself. But looks like nute burn in my opinion… hopefully an experienced grower can pop on here and actually help you though.

Thanks man, they’re so close! I’d hate to ruin them now :confused:

Nice looking plants,lots of Frost. You mentioned already using Cal Mag my next step would be get a runoff and check my pH And adjust accordingly .And also check ppm runoff.


try organic bone meal

This is before and after bone meal it said 2 tbl spns that wasnt enough its very mild so I put about 1/4 cup per plant in 15 gall pots

what kind of light are you using

Yes. It looks like calcium deficiency.
Keep in mind that damaged leaves will not recover. Look at new growth.

Runoff ppms and pH could help dx.

So will a support ticket. :+1:

COPY/PASTE the below list into your forum post.

Answer these simple questions the best you can.

If you do not know, or do not use something; Just say so; Or post

NA (non applicable)

• What strain, Seed bank, or bag seed

• Method: Soil w/salt, Organic soil, Hydroponics, Aquaponics, KNF

• Vessels: Pots, Grow beds, Buckets, Troths

• PH of Water, Solution, runoff (if Applicable)

• PPM/TDS or EC of nutrient solution if applicable

• Indoor or Outdoor

• Light system

• Temps; Day, Night

• Humidity; Day, Night

• Ventilation system; Yes, No, Size

• AC, Humidifier, De-humidifier,

• Co2; Yes, No

Always try to upload a clear picture of any issues you may have to allow the community to assist you.

Add anything else you feel would help us give you a most informed answer should be included. Feel free to elaborate, but short and to the point questions and facts will help us help you in a more efficient manner


1 BLOOMSPECT 600W LED and 1 GalaxyHydro 300W LED in a 4x2x5 tent

at 5’ tall i assume your light is close to the top of the plants, you maybe getting some light burn

i found this to be a real good read

That’s a possibility. I will say that they are both at the height that is recommended by the manufacturer.