Double Calcium Nutes for HLG V2 288?

Strain: Duke Diamond's C99 x C99s1

Hey Folks,

I have a HLG v2 288 Double Panel about 22" away from the canopy. Its at 22,000 Lumes at canopy at 81-85 degrees with RH 58. I'm having what looks like a calcium Deficiency or Manganese due to the necrotic spots on the leaf margins. I have been giving her Cal-mag every other watering, should I do it every watering? Should I double up? I don't think she is hungry because Nitrogen is a mobile nutrient and the leaves on the bottom of the plant are fine, in fact they are dark green. I want to get this problem corrected so I can flip the lights. The plant keeps getting taller yet the stems are super purple and kind of thin. the plant has gotten better in the past 2 weeks but still not where it needs to be in order to help. PLZ Help!

For reference.


What brand calmag and amount per gallon? Ph

The Organic Cal-mag is from TPS Nutrients at 1ml per 1/2gal. the soil ph is at 7 maybe higher, but definitely not higher than 7.5. It’s in a 3gal horticulture plastic bag-pots. It’s in an amended Fox Farms Ocean Forest soil with added perlite. It’s been in there for maybe 2months, it’s definitely rootbound. There are so many roots in the soil, I have to push hard just to get my moisture meter down to the right depth for an accurate reading. I’m not transplanting it because I need the headroom. It looked worse but I revived it back. I was feeding it it Fish amino Acid that I made, along with Compost teas and top dressing with EWC, and Bu’s Compost. It was suggested that I revive with synthetic nutes, because of the lights I use are so strong the plants ate nutes up. When I thought it was hungry I was feeding it ever watering trading off between GH’s Maxicrop and FAA, Cal-Mag, and silicate Now I believe that wasn’t the case, I’m fairly convinced it’s Calcium, but the soil can definitely go down in pH. Do you have any suggestions? I would like to go back to the organic way, but I do have some DynaGro Bloom for back up. Here’s a better picture of the leaves

I think....I'm seeing mag def on the last pic. Start of Ca def possibly to follow.

PH 7+ cannot be good, but I dont know how to correct soil. I grow in coco.

The calmag you are using only provides about 12ppm Ca, 3ppm mg. Per ML.

TintEastwood said:

I think....I'm seeing mag def on the last pic. Start of Ca def possibly to follow.

PH 7+ cannot be good, but I dont know how to correct soil. I grow in coco.

The calmag you are using only provides about 12ppm Ca, 3ppm mg. Per ML.



View attachment 4618722

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Is that not enough?

DankTankerous said:

Is that not enough?

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Unfortunately I'm weak with soil. No way to know.

We did confirm the tps is kinda weak relative to gh calmag.

TintEastwood said:

Unfortunately I'm weak with soil. No way to know.

We did confirm the tps is kinda weak relative to gh calmag.

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that’s funny, because their selling point is that it’s very concentrated

If you think its root bound now then maybe deal with that first.
Just repot it in a pot ever so slightly deeper but considerably wider, massage and break up the root mass a bit or trim some off before hand.

Fwiw all my "calmag" issues went away when I started using Recharge. I think maybe I was just having lockout issues that were fixed by boosting microbial populations. This is in soil tho, no clue how or if it works in coco.

DankTankerous said:

that’s funny, because their selling point is that it’s very concentrated

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The TPS appears to have zero N, thats a good thing!

I'm learning it's helpful to know the contents and concentration of whatever product I'm using.

That pH is way too high..you want 6.5 ph for soil...You starting getting outside of the optimal range and nutrients will get locked out