Grapefruit Auto Hempy!

Been having heat issues so I hope this one makes it. 30°c+ outside, window fan installed, have 2 fans in tent and 4" carbon filter fan. So far keepin the tent doors wide open keep temps barely under 30°c
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It’s too wet it’s eating it’s cotys instead of drinking.
 
I figure 1 of 3 things is going on with this plant. #1 the vermiculite is blocking uptake of alot of nutrients or #2 im feeding it soo much its not able to uptake everything or #3 this plant is just hungry as ever lol

Id think tho that if #2 id see some plant stress??? So far she looks great, small buds tho so far.

My 1st time using the bud Explosion and sweet candy with any grow. But 3rd with megacrop ;)
How much potassium is it getting too much shuts down uptake if others? I didn’t read your full feeding schedule.
 
Nutrients:
(MC) Mega Crop Nutrients (9-6-17)
(BE) Bud Explosion (0-19-39)
(SC) Sweet Candy (0-0-16)

Growing Medium: Pearlite/Vermiculite 50/50 Mix

Week 1 = (1 tsp MC) + (1 tsp Calmag)
Week 2 = (2 tsp MC) + (1 tsp Calmag)
Week 3 = (2 tsp MC) + (2 tsp Calmag)
Week 4 = (1 tsp MC) + (1 tsp BE) + (1 tsp Calmag)

So far
 
Today there are a few larger bottom fan leaves that are almost totally yellow, kinda marbled lime green/bright yellow. So I made up 4L water moxed with 3 tsp of megacrop only, feed the whole 4L... should help return the general green back. Tomorrow will feed again but 2 tsp megacrop + 1/2 tsp BC + 2 tsp Calmag
 
She perked up well after the watering ;) give her another day or two before next watering.
What temperature is the coldest part of your day now? And what is the average temperature during the day?
 
What temperature is the coldest part of your day now? And what is the average temperature during the day?

I only grow indoors so the tent is 28°c continually. But the outside temp swing is bad lately, this morning was only 8°c, but tomorrow is 33°c.
 
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