Anyone know whats wrong here?

First off I've only been at this for about 6 months so I'm still very much a noob.

I'm 10 days into flower and the upper portion of 2 of my girls (Peach Crescendo Bx1) are looking very pale green and slightly less perky than the rest of the gang.

These are about 16" under spider farmer Leds at 80%.
Temps are around 84 with an average 40% humidity

Using subcools super soil recipe and occasionally give them ful-humix and recharge. Gave a top dressing of terp tea bloom & roots organic uprising veg formulas cause last time I ran them they started dropping leaves like crazy around week 3 showing heavy loss of nitrogen and other deficiencies so I tried to stay on top of it this time. I keep my water in the 6.4-6.8 range and heat it up to around 78°.

Is this just something that happens in stretch or is it a deficiency of some sort?

I've also noticed this on a different pheno I'm running which I'm assuming is potassium deficiency? Not sure if they're related at all but figured I'd throw it in here just in case.

I give them all a liter of water every other day.

Sorry here's the photo

Anyone? Anyone at all?

Just Another One said:

Sorry here's the photo

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Sorry haven't been on much. That is 100% Phospherus Deficiency. The buds are hungry and pulling it from the leaves. P deficiency will cause the edges & tips of the fan leaves to yellow and eventually wilt, it can look kinda like nutrient burn but the way to tell is catching it early like this.

Weeks 4-5 of bloom your plants will be in their "swelling" stage and definitely consume the most P (Phosphorus)

Considering you're running a super soil what I would do to implement some phospherus is purchase a little 2 oz bag of RAW NPK Phospherus and apply it through your water. Should cure it up within a few days.



IMPORTANT: RAW products are insanely powerful you literally only need 1/16th-1/8th teaspoon per/gallon of water. I would start out with 1/16th teaspoon or use a digital gram scale to feed based on their chart here:


My Gelato 33 always has Magnesium & Phosphorus issues. Keep in mind this product does have Nitrogen in it so make sure you cut out any other nitrogen sources you may be adding like for example CalMag. Don't use calmag supplements past mid-bloom if possible.

As for the droopiness that could be from lack of co2 (fresh air) and or possibly the lights are too close?

What is your environment like in the tent & in the room the tent is in?

I always have trouble with my Mars-Hydro lights since I got them I regret honestly buying them. They have been pretty good to me but they seem to really be finnicky and cause weird calmag issue sand other stuff.

I since switched to more expensive commercial fixtures. Growers Choice ROI-E720.

calvin.m16 said:

As for the droopiness that could be from lack of co2 (fresh air) and or possibly the lights are too close?

What is your environment like in the tent & in the room the tent is in?

I always have trouble with my Mars-Hydro lights since I got them I regret honestly buying them. They have been pretty good to me but they seem to really be finnicky and cause weird calmag issue sand other stuff.

I since switched to more expensive commercial fixtures. Growers Choice ROI-E720.

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Correct me if I'm wrong but don't LEDs cause excess cal usage of the plants forcing the need for more?