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Newest growth is yellow
- Thread starter THSea
- Start date
Chronic Newfie
Member
What are your temps? I think low temps will do that.
could be number of things actually ....that sh's hungry ...could be a little mg shortage....light bleching...
give more info ....
how old are the plants
what PH are you giving to the plants
humidity..
soils ph
feedings
temps day/night
lights/how far from canopy
that kinda stuff....
give more info ....
how old are the plants
what PH are you giving to the plants
humidity..
soils ph
feedings
temps day/night
lights/how far from canopy
that kinda stuff....
stealthballer
Active member
sulpherish
Blackvelvet
Member
New growth being yellow means a shortage of an immobile element. What is needed is trapped in the bottom leaves and cant move up the plant. Elements that behave like this are calcium, sulfur, iron, manganese, zinc, copper, and boron. Most of the time high ph is to blame. If I were to guess, I would say its simple iron deficiency (if there is sulfur in your ferts). Check ph and lower to around 6 if needed. Ensure the plants are receiving adequete amounts of the elements listed above. 
TNJed
Member
Mine started doing that, and it progressed to a very bad situation. Mine was a major micronutrient malnurishment. Sulphur, iron, calcium, and zinc. If it's not low temps., you might need to feed them a little more. I was running an aeroponic system under a 600w HPS, and my ppms were only around 300. Three foot plants in an aero need more food than that, or they go wrong fast! Good luck!!
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The plants are about 6 weeks old from seed. They've been topped and pruned.
The pH of the water w/ nutes is 6.5.
The pH is always at 6.8 because I add dolomite lime to the soil mix.
Humidity fluctuates, but usually around 50 to 60%
I feed them full strength botanicare organic grow nutes. I also add cal-mag, sweet, and liquid karma. And I almost forgot, I give them micronutes on watering days, not feeding days. I will switch to the bloom formula in about a week since I started flowering a few days ago. I feed every other watering.
Temps are about 75-80 with lights on and about 65-70 lights off.
My 600wHPS is about 18 inches away from the canopy.
I hope this helps diagnose the prob.
The pH of the water w/ nutes is 6.5.
The pH is always at 6.8 because I add dolomite lime to the soil mix.
Humidity fluctuates, but usually around 50 to 60%
I feed them full strength botanicare organic grow nutes. I also add cal-mag, sweet, and liquid karma. And I almost forgot, I give them micronutes on watering days, not feeding days. I will switch to the bloom formula in about a week since I started flowering a few days ago. I feed every other watering.
Temps are about 75-80 with lights on and about 65-70 lights off.
My 600wHPS is about 18 inches away from the canopy.
I hope this helps diagnose the prob.
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hi thsee,
In the last two days ive seen simular colouring in my grow, only change i made was increased ec from 2.0 to 2.2 and added fulvic/ humic acid for the first time. Growth increased instantly like they where being held back by the lesser ec of the last week.
Im thinking/ hopeing its a good thing and just the plant struggling to keep up with fast growth now.. Im sure well find out soon
ive never had this much yellowing in a short time after a change normaly id notice over / under feed upto a week after changing ec or additives.. Makes me think the foliar feeds could have also played a part silica, rhizotonic and dutch master range..
some new leaves are totally yellow,
taking pics in the dark is harder than i thought
a couple of better ones showing the whole garden now with yellow tips.
Ill post these pics again in my tread if you want to see what they looked like two days ago.
In the last two days ive seen simular colouring in my grow, only change i made was increased ec from 2.0 to 2.2 and added fulvic/ humic acid for the first time. Growth increased instantly like they where being held back by the lesser ec of the last week.
Im thinking/ hopeing its a good thing and just the plant struggling to keep up with fast growth now.. Im sure well find out soon
ive never had this much yellowing in a short time after a change normaly id notice over / under feed upto a week after changing ec or additives.. Makes me think the foliar feeds could have also played a part silica, rhizotonic and dutch master range..
some new leaves are totally yellow,
taking pics in the dark is harder than i thought
a couple of better ones showing the whole garden now with yellow tips.
Ill post these pics again in my tread if you want to see what they looked like two days ago.
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