Light splotches on top leaves (3 weeks from germ)

[joshjones43]

All my babies are under KingLED 4000w quantum boards at 50% power. Receiving 20k Lux. I feed them only when they’re completely dry and the pots light. About every 4 days. Aside for a ph of 6.0-6.5 water, I feed them PowerSi original (nitrogen, Phosphate, and Silicone), Mr.Fulvic ( Fulvic & Amino Acids), and some Cal Mag. My temps stay between 70 and 78 depending on the time of day and my RH stays between 50 and 65%. Everything is on timers. Also have multiple fans to keep optimal air circulation. Most of my plants are growing perfect but two have light green splotches and little white tops at the end of the leaves

 

[GNick55]

All my babies are under KingLED 4000w quantum boards at 50% power. Receiving 20k Lux. I feed them only when they’re completely dry and the pots light. About every 4 days. Aside for a ph of 6.0-6.5 water, I feed them PowerSi original (nitrogen, Phosphate, and Silicone), Mr.Fulvic ( Fulvic & Amino Acids), and some Cal Mag. My temps stay between 70 and 78 depending on the time of day and my RH stays between 50 and 65%. Everything is on timers. Also have multiple fans to keep optimal air circulation. Most of my plants are growing perfect but two have light green splotches and little white tops at the end of the leaves

firstly what is your growing medium?
too much nutrients..

 

[joshjones43]

I have them in FFoF with like 35-40% perlite, 5-10% vermiculite, and a little bit of DE. It says the soil should be good for 20-30 days on nutrients. Should I lay off the Mr.Fulvic and Cal Mag and only run the PowerSi?

 

[GNick55]

I have them in FFoF with like 35-40% perlite, 5-10% vermiculite, and a little bit of DE. It says the soil should be good for 20-30 days on nutrients. Should I lay off the Mr.Fulvic and Cal Mag and only run the PowerSi?

i’d say so at the moment. not informed about those nutes.,
though with fox farm you when needed should be using an organic based nutrients and no ph’ing unless your gonna use synthetic nutrients.,
either way just dial it back on the nutrients they don’t need so much.

 

[joshjones43]

The PowerSi is basically just providing the silicone, it’s used throughout the whole grow. I use the botanicare cal mag but I lay off of it and the Mr.Fulvic. My actual nutrient blend I got from Aqua man and it’s the Jacks 3-2-1 regime. Haven’t started that yet though. Figured I wouldn’t need it for a good while. I was using the nutes in a foliage spray for a few days but stopped after the spots appeared. It’s been a couple days and they do look better with just regular water put on them

 

[GNick55]

The PowerSi is basically just providing the silicone, it’s used throughout the whole grow. I use the botanicare cal mag but I lay off of it and the Mr.Fulvic. My actual nutrient blend I got from Aqua man and it’s the Jacks 3-2-1 regime. Haven’t started that yet though. Figured I wouldn’t need it for a good while. I was using the nutes in a foliage spray for a few days but stopped after the spots appeared. It’s been a couple days and they do look better with just regular water put on them

ok, and @Aquaman should be back to check on this thread than.
the jacks you could start very soon, using lightly! let’s wait for aquaman..

 

[joshjones43]

Much appreciated. First time growing bud but I do landscaping and have a garden so I do have a green thumb to a degree. Probably start jacks in a week when 4-5 nodes have formed and just do like half the recommended dose

 

[GreenMtnGuru]

Much appreciated. First time growing bud but I do landscaping and have a garden so I do have a green thumb to a degree. Probably start jacks in a week when 4-5 nodes have formed and just do like half the recommended dose

Silicone should be used to form a water-tight barrier on an object of your choice.

As long as that choice is not your cannabis plant.

Silica, however, is a building block for cell replication. And it is highly recommended that you cease using it after budset.

But, you being a landscaper, and having a garden, already knew that stuff.

Right?

 

[joshjones43]

Yeah, I’m still a few weeks away from flower and probably 6 weeks away from flower production. Still lots of time for growth

 

[Capital_Florica]

I was using the nutes in a foliage spray for a few days but stopped after the spots appeared. It’s been a couple days and they do look better with just regular water put on them

Try to only use foliars when lights are off. And you shouldn’t be spraying them with just water, if you are.

 

[joshjones43]

Thanks, I haven’t sprayed them with anything in a couple weeks. Don’t have any pest or fungal problems either, setups perfectly dialed in now