Problem with two plants yellow on new growth.

I'm not 100% what this can be is it not enough light or to much light ? The temps and humidity I'm finding hard to correct for now aswell.But i will be moving them to a bigger tent soon.

May want to list the nutrients, lights,soil., watering etc to get more help. My guess not enough food for how close your running lights but doubt it’s from not enough light

Hello yeah I’m useing bio buzz light soil as they just over two weeks old the bigger ones and ive just been watering for now was going to repot them soon when they need watering. Im useing a 100w led light but this is my first time round useing a led I have it on 50% for now as it’s a small space and can’t get the light higher for now.

Just set up my main light I got today and put them in the big tent, I repotted the bigger ones and gave them 2ml of bio fish mix and will see how they get on the next few days. I have only switch the light to 25% to see what temps I will get.

Typically if you are seeing new growth impacted first, it's a light issue. If you are seeing the oldest/bottom leaves being impacted then it would most likely be nutes.

Shaded420 said:

Typically if you are seeing new growth impacted first, it's a light issue. If you are seeing the oldest/bottom leaves being impacted then it would most likely be nutes.

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Thanks for advice its my first time useing these lights and I have started them off in a different soil from what I usually use so hoping the light and feed will sort them out. I'm getting bio buzz allmix next week think my temps run too cold where I have them now but no other place to put them for the moment I'm at 21c and 50% power on the light now. as in the morning today when it was running at 25% and no root mat was around 18c. I have them on 20/4.

Growium said:

Thanks for advice its my first time useing these lights and I have started them off in a different soil from what I usually use so hoping the light and feed will sort them out. I'm getting bio buzz allmix next week think my temps run too cold where I have them now but no other place to put them for the moment I'm at 21c and 50% power on the light now. as in the morning today when it was running at 25% and no root mat was around 18c. I have them on 20/4.

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Temps up for sure. Under led you want around 25-28c, and the root temps are also important. Cold root zone will slow uptake full stop.

At 21c, you'll find your leaf temps are well under 20c.

VincenzioVonHook said:

Temps up for sure. Under led you want around 25-28c, and the root temps are also important. Cold root zone will slow uptake full stop.

At 21c, you'll find your leaf temps are well under 20c.

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I have moved them up about one foot closer to the light I'm not sure if that will improve on the heat or not being it's my first time using a led. Do you think it will heat them up a few degrees or am I better just going to 75% on the light. I'm not exactly sure on the heat of theses LEDs but seems very little.Heres a picture from today they have got a bigger past two days

Jusing the same soil and it will put me thru 3-4 weeks before I have to use nuts.
Are you checking the ph in the water you are jusing?

Minbebistillmax said:

Jusing the same soil and it will put me thru 3-4 weeks before I have to use nuts.
Are you checking the ph in the water you are jusing?

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I haven’t been to be fair I’ve been thinking it’s compost till you have just mention this.All I used to use was organic compost and I brought this thinking the same only to read the bag again now thanks for mentioning it. I’m not sure if to use the organic compost again as had a lot of gnats before. Do you know if would I be able to use neem oil on the compost before useing it if you know ? why I chosen bio buzz this time round hopeing had none in the bag which seems so fingers crossed.

They looking not that bad the big pot ones.im waiting on my ph meter and the up and down which should be here for next watering. nearly week 3 now I ended up putting them back in the small tent as can't get high enough temps yet in my main tent.

looking much better