is this cal mag def?

Could be lack of N, or something else. Some info about the grow? Soil it's in and feedings?

 

You should foiler feed it some GP Massive Bloom with c02 water.

 

Maybe your light is too strong when you're feeding them or are you underwatering it?

 

Almost all mediums that have coco and sphagnum peat (happy frog) cause problems.

Coco that`s not been washed and buffered causes total collapse of a plant.

Coco and sphagnum peat moss have a high cation exchange rate CEC.

So later into veg you get cal mag on the leaves, which can then be followed by iron, potassium sodium.

The coco or sphagnum holds on to all the cal mag, even the nutrients cal mag if there`s any in it, and exchanges it for potassium and sodium (coco is high in sodium because coconuts grow next to the ocean).

So what appears to be a cal mag deficiency, is actually not.

You cant fill the deficit , if you give it cal mag, it gets worse.

I just learned that from after using different brands of soils that have coco and sphagnum for a year and not figuring it out.

The best thing to do, is grow in peat, mixed with vermicompost, or pure vermicompost, or a mixture of different things maybe plain organic compost and enrich it.

The "cal mag" issue that`s crept up over the last years and years that people everywhere have, most of the time is not cal mag, its the fucking unbuffered unwashed coco and sphagnum that the shithead brands wont fix prier to bagging, or make people aware of.

The deficiency is not actually a deficiency, it shows itself as that because the sphagnum is killing that plant by robbing it of its nutrients, and also localizing it in the leaves.

The more water that`s poured into the plant as it grows, the higher and faster the exchange rate occurs.

I just lost 9 ass wanking seeds because of the same shit, but my soil was coco AND sphagnum.

It started off as potassium being stored in the corner of a leaf after 3 weeks, then nothing until 7 weeks later, calcium in the leaves, and magnesium like yours.

I gave cal mag, the plants picked up, 5 days later, the plants completely degrade.

I have now changed my medium and am waiting on dolomite lime to come to up the ph, because the new soil is ph6, which is far too acidic.

I would get rid of the sphagnum peat, its shit, and it also acidifies its surroundings.

 

All you need are 3 nutrients, grow, bloom, and sugar.