Flowering: Week 4 yellowing. Help wanted

C

COgrow13

Member
Hey all,

Back with another possible issue on my first grow. I am in the 4th week of flowering and noticed a distinct color difference on my KC Brains Mango plant. The middle is a yellow/green and the outside a darker green. It's actually cool looking but I know this isn't good. I was thinking a possible Calcium deficiency since Blumat has primarily taken over watering(due to work) and I don't add mag/cal to the mixture. The thing is that it's not like the coloring I've seen on deficiency pictures around the community, which makes it hard to pin down.

The plants stretched a lot during the first 3 weeks and got within 11 inches of the light. I corrected and moved the light further. This is the only plant that seems to be showing this possible issue.

Anyone seen this before and have any ideas?

The Grow
2x4 tent
Soil: coast of maine stonington blend
Light: Spiderfarmer SF-2000
Food: Buds and Bloom (fed at start of week 1 and 3 of flowering)
Fans: stationary clip above canopy and osculating fan under.
Water: Blumat system and occasional hand water when feeding
 

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C

COgrow13

Member
Here is a top from another plant that has leaves around the cola pointing straight up. It made me think of possible light burn but these leaves aren't yellow and are further away from the light than the Mango.
 

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hotrodharley

hotrodharley

Well-Known Member
COgrow13 said:
Really? Why so low?
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You’re running a 200 watt light. Right? Using my quantum PAR meter under my 100 watt Bestva at that power and distance it’s like 700. Use the Photone DLI online calculator. It’s just 3 steps. Put 700 as your par. See what it says. Yours is probably more than 700 but see what it says.
 
C

COgrow13

Member
hotrodharley said:
You’re running a 200 watt light. Right? Using my quantum PAR meter under my 100 watt Bestva at that power and distance it’s like 700. Use the Photone DLI online calculator. It’s just 3 steps. Put 700 as your par. See what it says. Yours is probably more than 700 but see what it says.
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Ahhh, thank you. I read some more stuff about light intensity after posting this and realized I was completely in the dark. I figure I needed to end up at 100% and anything lower was a sacrifice. Definitely need to read up on everything you said.

Yea, 200watt light. I appreciate the advice.
 
hotrodharley

hotrodharley

Well-Known Member
COgrow13 said:
Ahhh, thank you. I read some more stuff about light intensity after posting this and realized I was completely in the dark. I figure I needed to end up at 100% and anything lower was a sacrifice. Definitely need to read up on everything you said.

Yea, 200watt light. I appreciate the advice.
Click to expand...
Turn it to 80% power. Watch it. You can always turn it back up.
 
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