Thatsmessedup's Blackstar 500 LED, LST Grow #2

Looks like P or K deficiency to me -- can't remember which maybe hit'em with both?

So definitely deficiency and not over fert? Might make sense because I only fed 850ppm last feeding. Now if I could narrow it down to P or K.

http://www.icmag.com/ic/showthread.php?t=11688

There's also a good thread in the plants and plant problems forum with pics. Don't really know much about ppm so I couldn't comment on that. It doesn't look like nutrient burn to me but like I said I'm also not a hydro guy so maybe something I'm not used to seeing. I checked the thread above and I don't think it's P or K deficiency now at least it didn't look like the pics there. Not sure what you got there -- any environmental stress?

Thanks for the info... BTW I'm using soil not hydro

oh yeah that's right i remember now just not used to measuring ppm for soil

I'm not great at diagnosing deficiencies but from that charts and pictures I can find that looks like a phosphate deficiency... Hope that steers ya in the right direction...

It looks like either a calcium defieciency or a boron deficiency. if it started as spots its calcium. If it was p they would bedark tips and edges.and light green and droopy. N def would be spotty yellow. Mag def edges yellow. Phos toxicity would look like over watering. Brown and dried out and crispy.

I would flush.......seems like you have quite a strong nute regiment....plain aerated water does wonders for plant health, defs are rare in soil.......try it once they dry out and see if it improves........good luck