Help - Leaves turning yellow 5 weeks into flower

[HigherTheHigh]

Hello everyone!

I have 2 Super Lemon Haze plants in flower that are turning yellow, i dont know weather its light bleach or other problems, the light is 16" above canopy.

PH is 5.8

Coco/perlite mix

Calmag up to 150ppm, ionic bloom up to 800ppm, my super skunk arent yellowing off but these are, they also did the last time i grew SLH.

Anyone help?

HigherTheHighs multiple grows

• HigherTheHigh
• Jun 11, 2018

 

[Chris Scorpio]

Looks like magnesium issue

How much calmag do u add per gallon, not ppm, ml or teaspoon

 

[HigherTheHigh]

No idea mate its usually around 3ml per 10L, but iv always went up from what the patter ppm is, so its usually 80 making it to 150ppm, but year around 3ml per 10L.

 

[Chris Scorpio]

Think yer a bit light, thats like 1/2t in 2-1/2 gal

I do at least 5ml per gal, problem children get 10ml per gal

 

[HigherTheHigh]

Just made 10L of mix up as well, ill add another 1.5ml to whats there and see what happens, this is a great strain but it has its fair amount of problems.

Nothing else it could be do you think?

 

[Chris Scorpio]

I never run my nutes over 1/2 strength, calmag is an exception running LED lights

I Rarely worry about ppm since I know where my nutes % is

So I'd dble check your nutes strength and up the calmag

 

[Chris Scorpio]

I would add more calemag than just 1.5ml, but that's me

 

[HigherTheHigh]

Im following cultivators feed schedule so i know its not the nutes, must be the strain or its got to be light bleaching, ill try adding a touch more calmag then see where we are, thanks chris.