Anyone know what caused this? Cherry Punch F1

[DandJGrowManagement]

We have quite a few Cherry Punch F1's and I know they are sensitive to food so they are just in Happy Frog. This issue on one of them does not look like nute burn.

 

[Sonic_C]

What's the PH of your water? Soil should be 6,5. Coco Coir 6,0.

Could also be CalMag issues, imo.

 

[DandJGrowManagement]

What's the PH of your water? Soil should be 6,5. Coco Coir 6,0.

Could also be CalMag issues, imo.

So... we started with tap water on all strains (Moby Dick, Malana Cream, Cherry Punch F1, Critical Purple Kush, and 1 Zkitlles). Our pH levels were very high at one point (9!) We have since switched to purified Nursery water and added Espoma Soil Acidifier. The pH is down to around 7 now.

 

[TheGoldenRoad]

What kind of light are you using, and how intense / close?

 

[DandJGrowManagement]

What kind of light are you using, and how intense / close?

BESTVA 2024 Newest Upgrade DC2000 Led Grow Light with High Yield Diodes Full Spectrum LED Grow Lights for Indoor Plants Greenhouse Veg (2 of them) Aprx. 20 - 24 " high from the tops​

 

[SchwiftyGrower]

Im going along the lines of your light is too intense. It may also be that tip sat in the soil directly causing it.

 

[TheGoldenRoad]

BESTVA 2024 Newest Upgrade DC2000 Led Grow Light with High Yield Diodes Full Spectrum LED Grow Lights for Indoor Plants Greenhouse Veg (2 of them) Aprx. 20 - 24 " high from the tops​

The reason why I'm guessing light is if you look at the tips of the new leaves they look bleached.

 

[Sonic_C]

I think, it's the ph. Try to fix it.

 

[DandJGrowManagement]

The reason why I'm guessing light is if you look at the tips of the new leaves they look bleached.

Thank you. I am going to go and tend to them today. I'm thinking of raising the lights and I also have pH balancer ( see photo). I will update once I'm done.

 

[Week4Bytch]

Thank you. I am going to go and tend to them today. I'm thinking of raising the lights and I also have pH balancer ( see photo). I will update once I'm done.

PH OF 9 IS VERY HARD. (dam caps lock) filter your tap water (RO) or just use bottle water here on out.

 

[DandJGrowManagement]

We have quite a few Cherry Punch F1's and I know they are sensitive to food so they are just in Happy Frog. This issue on one of them does not look like nute burn.

This is our indoor set up:
8 foot by 4 foot tent -
-VIVOSUN S848 4x8 Grow Tent, 96"x48"x80" High Reflective Mylar with Observation Window and Floor Tray for Hydroponics Indoor Plant for VS4000/VSF4300
-VIVOSUN Air Filtration Kit R8 8″, Inline Fan R8 with Variable Speed Controller, Thermometer, Carbon Filter & Ducting Combo
- (2x) BESTVA 2024 Newest Upgrade DC2000 Led Grow Light with High Yield Diodes Full Spectrum LED Grow Lights for Indoor Plants Greenhouse Veg Bloom Light Hydroponic Grow Lamp
-SOIL = Espoma Organic Seed Starter Premium Potting Soil Mix (seedlings), FoxFarm Happy Frog Potting Soil (after transplant into 1G)
-STRAINS = (regular) Moby Dick, (regular) Malana Cream, (feminized) Cherry Punch F1, (feminized) Critical Purple Kush, and (feminized) Zkittles
-ADDITIONAL NUTRIENTS = i49 Germ Genie
-pH BALANCERS = Espoma Soil Acidifier, Bloom City Adjuster Kit
-HUMIDITY CONTROL = Dehumidifier, Portable Small Humidifier
-AIR FLOW = 12" Oscillating fan, (2x) 4" Straight line fans (positioned)

 

[TheGoldenRoad]

As a side note when it comes to pH, it's not really a make or break for those of us who grow in soil to hit perfect range. Hydro and Coco is a different story but I water all of mine with tap water. It will test at around 7.0 on a consistent basis. The only time that I would pH my nutrient solution is when I was using Armor Si which would raise the pH to around 8.0-8.5.

 

[LoveGrowingIt]

Another possible cause of leaf-tip chlorosis or necrosis is when the VPD is too high. That happens when the temperature is too high or the humidity is too low.

 

[DandJGrowManagement]

I just looked up the pH of the tap water in my city, and it is "between 7.3 and 7.6"

 

[LoveGrowingIt]

I just looked up the pH of the tap water in my city, and it is "between 7.3 and 7.6"

That's not bad, and kinda typical. Ours has been 7.6 every time I tested it.

 

[Captspaulding]

Also could just be a simple as that leaf tip was resting in the dirt wasn’t able to transpire correctly

 

[Captspaulding]

Another possible cause of leaf-tip chlorosis or necrosis is when the VPD is too high. That happens when the temperature is too high or the humidity is too low.

 

[Captspaulding]

Im going along the lines of your light is too intense. It may also be that tip sat in the soil directly causing it.

Definitely could be a culprit.

Im going along the lines of your light is too intense. It may also be that tip sat in the soil directly causing it.

I agree for sure
The fact that it’s on one of the lowest leaves and it’s only one I really think it was just resting in the soil, but at the same time that plant is starting to lighten up a good deal So I’m inclined to lead towards the light being a little too hot and a little too close maybe a little bit too much output Suggesting cal mag? Early for that I think. This thing is barely just in the veg as it is

 

[DandJGrowManagement]

Another possible cause of leaf-tip chlorosis or necrosis is when the VPD is too high. That happens when the temperature is too high or the humidity is too low.

Thank you. Along the way we had the Inline exhaust fan on high and then the humidity dropped to, around 43% for a few days (we are not living at the location). We added a humidifier, and are currently running at about 77° and 81% Humidity (the Malana's really enjoy that now)

 

[DandJGrowManagement]

We have quite a few Cherry Punch F1's and I know they are sensitive to food so they are just in Happy Frog. This issue on one of them does not look like nute burn.

UPDATE: I raised the lights up and transplanted 10 of them from 1g to 5g. Still a long way to go