Week 5 flower red and pale leaves

[Champagne]

Hi all, this is my SFV blue chem grow week 5 of flowering that is struggling from some nutrient imbalance.

Some leaves are turning reddish and lower fan leaves are getting paler.

Any help is greatly appreciated.

Cheers

 

[DoubleTripleOG]

Is it getting cold where the plant is when the lights are off?(like below 65f) That's the first thing I thought when I saw it. Reminded me of outdoor plants after the first few cold fall nights.

 

[Champagne]

Good call, the minimum temp reading that i have is 60F. Is this too cold?

 

[DoubleTripleOG]

Good call, the minimum temp reading that i have is 60F. Is this too cold?

It may slow things down some, and affect bud size a little. But that's only if other conditions are out of whack. What's the high temp when the lights are on? What's the humidity % during lights on?

If your lights on temps are around 70f, 50%-60% humidity will serve you well, and the plants should perform as normal. Even with temps swinging down to 60f during lights out.

 

[Collembola]

hello,

it's drawing nutrients out of the leaves, leaving the natural pigmentation,

although it looks probably too early in flower for it to be running out of nutrients, so i would consider upping what you are giving it.

> pretty though !

 

[Champagne]

During the day max temp reaches about 80F and humidity near the top of canopy is around 10% and ~40% near the top of the pot.

I've also switched to MarsHydro LEDs from HPS recently and i've read that they can cause the leafs to take on a red pigmentation.