Extremely light green new growth but healthy

[Greenthumber]

Has anyone ever seen such light green/yellow new growth? Plants look physically as happy as can be and really just started to take off in the last week gave them a first real significant feeding a week ago also with some recharge and after a few days top dressed some malted barley for enzymes etc. not really stressing it too much as I said they seem very happy with life just have never saw new growth so light green before? Possibly rapid new growth that just hasn’t filled in with chlorophyll yet maybe? Just curious to see what anyone else may have to say

 

[troutman]

They probably can use some magnesium, iron and other trace nutrients.
Just feed them a little more than normal. Proper pH is very important too.

 

[Crooked8]

Iron deficiency 100%. Yellow up top = iron, at the bottom = nitrogen

 

[troutman]

I use Greensand to increase my iron levels. Even rusty nails in your water container can help.
pH above 7 interferes with trace elements like iron which are more available at lower pH. I like
my pH just above 6 in soil.

 

[Greenthumber]

They probably can use some magnesium, iron and other trace nutrients.
Just feed them a little more than normal. Proper pH is very important too.

that’s interesting I actually was leaning towards iron to start with but the nutrient I gave them has iron mg and calcium in it I’m wondering if maybe something in the nutrient solution I’ve used is locking iron out by chance or like you said a possible ph issue is the other way I was leaning being I have been feeding from the tap here and there during the rainless weeks. In until a week ago they had been healthily lighter green not to dark but fairly healthy and consistently the same up until after the heavier feeding I provided a week ago etc. will have to get some soil ph probes and do some investigating

 

[Creeperpark]

I have ran into this kind of situation many times growing in soil that is slightly alkaline to heavily alkaline. Your pH is above 7 and the micro nutrients are starting to get locked out. You need to lower the pH of the soil very slowly and gradually in time for flower production. You can have all the nutrients in the ground you want, but if the pH is high, they won't be soluble and plant can't use them. The yellow green tops are telling you that the micro nutrients are starting to not be available.

Peat moss is an excellent soil amendment for acid-loving plants and is easy to incorporate into the soil. Simply add two to three inches to the top of the soil and work it into the layers of topsoil underneath. Google

 

[Creeperpark]

Greenthumper using Tap water will raise the pH above 7 too, and lock out micro nutrients. In the wild I would harvest creek water in large trash cans that percolated over miles of alkaline ground. The pH was high and so I lowered the pH with acid (pH down) and the plants loved it. You can fill your buckets with tap and lower the pH before using and help the yellowing. BTW you have a very sweet looking grow and are doing a super job!

 

[Greenthumber]

I have ran into this kind of situation many times growing in soil that is slightly alkaline to heavily alkaline. Your pH is above 7 and the micro nutrients are starting to get locked out. You need to lower the pH of the soil very slowly and gradually in time for flower production. You can have all the nutrients in the ground you want, but if the pH is high, they won't be soluble and plant can't use them. The yellow green tops are telling you that the micro nutrients are starting to not be available.

Peat moss is an excellent soil amendment for acid-loving plants and is easy to incorporate into the soil. Simply add two to three inches to the top of the soil and work it into the layers of topsoil underneath. Google

This makes a lot of sense after really thinking about it and it kind of solidified this after realizing that the few plants not potted into the ground slowly started showing the same issues and shortly after my few cuts inside in coco with a different nutrient blend started to lighten up the exact same and that was with ph’ing water. I will be slowly incorporating a lower ph water only feed until corrected after getting a soil ph probe in the am to see exactly where I’m at. As for the indoors I fed with a ph of 5.8 before leaving as they’re in coco and usually feed around 5.7-6.2 with the indoor mix, Just starting over in a new home without ro yet . Thank you sir for your help and kind words

 

[Creeperpark]

When I grew outdoors, I would get a basic soil tests from the local university. What I learned was, that the soil I was growing in, had everything it needed, all the nutrients were there in the ground in med. to high ranges. The only nutrient lacking was nitrogen but everything else was in the ground in abundance. However the pH was 7.6 to 8.2 (alkaline) and nutrients in the ground weren't available to the plants. Remember, you can put as much fertilizer you want down, but it won't be available if the pH is too high. A lower pH will add acid to the minerals, dissolve and bubble the nutrients loose so the plant can use them.

 

[Creeperpark]

I fixed the problem outdoors by just adding peat moss in the Fall and a little manure in the Spring for nitrogen. Peat moss being 4.2 pH added to a soil that's 7.9 will lower the pH to a suitable range. I was amazed how much different adding peat to a alkaline soil, could bring down the pH into the 6s and make all the nutrients available. The peat fix is only good for a year at a time and has to be repeated because the pH always swings back up. So before you plant those plants, if the pH is high, just add a little peat and everything will be good.

 

[Greenthumber]

I fixed the problem outdoors by just adding peat moss in the Fall and a little manure in the Spring for nitrogen. Peat moss being 4.2 pH added to a soil that's 7.9 will lower the pH to a suitable range. I was amazed how much different adding peat to a alkaline soil, could bring down the pH into the 6s and make all the nutrients available. The peat fix is only good for a year at a time and has to be repeated because the pH always swings back up. So before you plant those plants, if the pH is high, just add a little peat and everything will be good.

yea I love peat!! It really does tie a lot of things together for me between my last years outdoors and this year and also with growing indoors I’ve had the luxury for some time now of ph’ing from the get and knowing consistently where it sits with what regime in using etc etc But to my point last year I built my own soil and used 40% peat 40% ewc 10 biochar and some aeration and watered with teas and the occasional tap which explains why I may have not had the same issues last year , amount the living in a different city and being directly in ground this time.

I got a meter and checked this morning and was definitely on the high side of 6 riding 7 for a temporary and hopefully quick fix with what I have on hand I watered a 5 gallon bucket of 5.7 ph’d water at each base and seems to have brought it down atleast for the time being. Will check back after a nap it’s been a long night working nights. Will definitely add some peat in the mix! Thanks again

 

[Great outdoors]

I'm going to say sulphur.
Try a dose of epsom salts and see if you get any improvement.