Leaf discoloratation

[luckiestman13]

Trying to learn and hopefully get ahead of any possible problems. This is my second grow in this room. I added 3 x as much plants this time. And have more and a different light configuration.

4 ACDE hoods
4 DE high end grow bulbs
Lights at 50-60%
4 hoods spread over 14x 5 feet of scrog

4 50 ga reservoirs w 50 ga water pumps
Had been running 2 45 liter per minute air pumps split over the 4 reservoirs.
This morning I added another 45 liter air pump

pH 5-7
Temps 69-70
Humidity 55-70%
ppm about 650-750 ( I think I need to up my nutrients.)

These plants have been vegging since Oct 1 and were heavily de fanned yesterday.

Shot through color corrected grow lenses.

Pictures taken outside of flower from under fluorescent light.

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[AngryBird]

reps for good pictures.. look in my signature..pests and problems faq....

I will call in some help

 

[Cultivator]

what exactly are you feeding and they way ready to flower. plants are going to be massive. looks like start of calcium deficency, are you adding calmag and what is your starting water ec/ppm? are they dwc, i cant tell?

 

[KingstonRabbi]

Light colored spots are usually early calcium deficiency. But I've never caught it this early when signs are so slight. When I find them the spots are already brown. Only other cause I can think of would be pH lockout.

 

[luckiestman13]

Thanks for the replies

Yes it's a hybrid under current / DWC system. Or DWC in 50 ga reservoirs.

I'm using powered General hydroponics Maxi-grow and liquid botanicare cal-mag.

I use a digital ppm meter and about 40% of my nutrient solution is from cal-mag.

I also have not done a waster change yet. Just topped off. Occasionally I add 100ml of H2O2 to the reservoirs to keep everything clean.

Today the scrog net goes on. Yes they could be flowered but this room will be VERY FULL. Hoping to get 8-10lbs.


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[Cultivator]

you def dont need to up your nutes. if anything they a bit too strong hence the dark green.

200ppm calmag and 500ppm base nute is enough.