yellowing leaves

[stonegroove]

what is making my leaves start to go a little yellow, and there is some tissue damage on some lower leaves, these plants are 3 weeks old grown in rockwool, i use canna aqua vega a+b 6-3-8 at quarter strength to one third strength mixed with straight tap water that has stood for a week to reduce chlorine, ph 6.0, watering twice a day on ebb and flow, under a 600w MH, 18 hours a day, temp is 78F day, 70F night, plenty of ventilation and fresh air, sprayed with sparkling water for extra co2 and no pests, they should all be amazingly heathly, or am i worrying for nothing? i know 2 of them are outstripping the other 3 by miles, the really small ones are white widow and the big ones are g13 power skunk

 

[andy52]

looks like they are over watered to me,very droopy.

 

[Wiseguy_Chef]

other than over waterd they look helty to me.

 

[stonegroove]

have just noticed some of my stems have purple on them, is this some kind of deficiency?

 

[andy52]

no,some strains do turn purple.i have some that are totally purple.

 

[The Hemp Goddess]

A pH of 6 is too high for hydro. Try getting it down to between 5.5 and 5.8. What is the ppms of your water and your nute solution? Quit spraying them with sparkling water. It does nothing to add CO2 or ward off pests and could have stuff in it detrimental to your plants. I don't know about your watering schedule--I don't do ebb-n-flow.

 

[Alistair]

I know nothing about hydro, but they look over-watered to me too.

 

[VaNdLe]

have just noticed some of my stems have purple on them, is this some kind of deficiency?

I actually had a freind who grew a plant outdoors, and for whateva reason he had to move them into his shed for 3 days...they started turning purple Stems and new growth, 2 days later it got worse plants just couldnt survive, There is a deficiency that can turn your plants purple!

 

[WeedHopper]

I actually had a freind who grew a plant outdoors, and for whateva reason he had to move them into his shed for 3 days...they started turning purple Stems and new growth, 2 days later it got worse plants just couldnt survive, There is a deficiency that can turn your plants purple!

LIke a snake,,sometimes the color is good,,sometimes the color is not so good. It is all about the breed.

 

[smokingjoe]

I'm with andy. Over watering and hence overferting.


Nute lockout results.

In this instance assuming the strain wasn't naturally purple, it's be a phosphorous lockout or is it potassium. One of the two.

Magnesium is usually the first casualty which locks out the rest.

Hit em with a dose of epsom salts and then cut back the fert schedule.

They should come good.