I’m growing for the first time DWC ( this is my 2nd grow) and I run into some problems already.
I m growing from seed Super Lemon Haze (Greenhouse Company) in DWC and I’m on week 7 (day 46) from when I pop the seed in to the rockwool.
I use Low’s 5 gallons bucket as my reservoir.
I feed the plants Current Culture nutrients at : Coco Cal 2 ml/g
Veg A 2.5 ml/g
Veg B 2.5 ml/g
Silica Blast 2ml/g
SuperTrive 0.3m/g
UC Roots 2ml/g
Rapid Start 1m/g
Total PPM between 600-650
PH 5.8-6.2
My PPM’s are dropping from 600 to 500 and PH drift from 5.8 to 6.2 in less then 12 hours so I have to add back nutrients morning and night to bring it back to 600 PPM.
Recently I got into some problems, I got brown necrotic spots and wholes into the older leafs.
I will attach some pics
I will appreciate any help
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When I used to grow Aeroponics I saw some funny growth like that here in there as long as you don’t see any mass leaf die offs or anything out of the ordinary I would say stick to what you are doing
Shou I try to use those once a week?
What do you think ?
Firstly let me thank you for your replay, really appreciate it. I been watching your videos on YouTube and learned few things. Great stuff! Thank you!
I was suspecting Ca/Mg deficiency and upped the Coco Cal. Seams like now is getting better.
Also took the air pump out of the grow room, my CO2 in the room is fluctuate between 800-1400PPM without supplementing. My AC is pulling air from the attic where the heater exhaust the burned gas. Kind of free CO2.
CO2 in the nutrients solution can cause those spots? Or Ca deficiency?
Thank you,
Your plant look fantastic! It sounds like you know what you're doing. Those markings are a little strange. It kind of looks like calcium deficiency in some pictures but in others it doesn't. Approximately how many leaves are impacted?