They look burnt but could you supply more info?
How old are the plants, what type of soul are you using, had you upotted recently, what concentrations did you feed at? Are you ph'ing your water? Tap or RO?
You shouldn't be spraying with anything other than ro/distilled water when they're really young. In fact you don't really need to spray them at all. The best way to add humidity is with a humidifier. Sometimes they suggest to new growers that you can spray them just so you'd have something...
I think the leaves received some kind of damage. One of the plants looks like it's been fimmed. Perhaps at that time? Did a droplet of feed/foliar get trapped in the node of the top and burn? I'm just spitballin here because I've had this on mine before. I also agree it could be ph.
I have a 3x3 and it fits 4 x 3g pots snugly with all in full bloom. 6 x 3g I think would be a good fit. You might be able to fit more but with 600w of hps you'll lose around the edges so you don't want to really pack them in.
That's a conundrum my goat loving friend. From my experience and others I know ssdd can take pretty much whatever you throw at them. Some kind of ph issue perhaps?
I have the hso blue dream indica pheno on Day 25.
She's had issues from the get-go which I thought were caused by ph lockout but what I've narrowed it down to: med-light nutes, heavy magnesium.
I have purple striping on the stems and rust spots everywhere.
Hey everyone. Action! Lol
Day 35. Two plants. Seem to be doing ok on the balcony. They get ok sun but it gets really windy, hence the ties.
They're being fed Botanicare pure blend pro grow/bloom at half strength.