Newer growth turning yellow

My plants are 7 and 8 weeks old, in ffof except for the one at the bottom left which is coir. The coir plant looks fine but the three in soil are starting to go yellow on top.



From what I’ve been reading it could be iron or nitrogen deficiency. Problem is there’s a few variables.

I transplanted and defoliated 3-4 days ago. I’ve also been using tap water with 450ppm the last week instead of spring water. I always ph it to 6.2-6.8 for soil. I would think it’s the hard water except the coir plant is ok.

Could it be stress from being trimmed and re potted? They were also getting to the point where the soil was depleted so maybe they were about out of food and suddenly had more room so they’re concentrated on roots right now?

What do you guys think? It’s pretty minor at the moment but I’d like to stop it ASAP.

Could be a multitude of things. They are probably stressed from the transplant and the change of water source all in one. 7-8 weeks for ocean Forrest is just about as long as that soil will provide nutes without feeding. Don’t just assume that it is out of food though. Make sure your runoff is with 6-7 ph. When you water again, try to collect the first bit of runoff and test the ph of it. If that is within range, then you can assume it’s a deficiency as lockout should just about be ruled out. Tap water also contains chlorine which will kill beneficial microbes within your soil.. this is why I always use purified water and add cal-mag and nutes when needed. If it is a ph issue, go on Amazon and buy yourself a bag of pulverized Dolomite Lime, it auto ph’s your soil and adds needed calcium for your girls. Heads up, new growth, especially on the heads usually come in a brighter green until they mature more so make sure other leaves are starting to show nitrogen deficiency before you just add a ton of nitrogen.

I should add that in the 8 weeks they went from cups to .75 gallon to two gallons and then to 5 gallon a few days ago, so there was new soil added each time.


Soil usually takes a few days for changes to show right? So if they were hungry and got put in new soil 3 days ago they should start going back to normal over the next couple days?

A.k.a said:

I should add that in the 8 weeks they went from cups to .75 gallon to two gallons and then to 5 gallon a few days ago, so there was new soil added each time.


Soil usually takes a few days for changes to show right? So if they were hungry and got put in new soil 3 days ago they should start going back to normal over the next couple days?

Click to expand...

My bad, should’ve assumed you transplanted up and added new soil. You should be fine with nutrients then.. depending on how the roots were it can take awhile for them to reach out and feed off the new soil. I really think she’s just stressed from the defoliation, new water source, and transplant all at once. Give it a week to bounce back before you take any drastic measures

I would first find out why 8 week plants look like they 3 weeks old?

9#Purple said:

I would first find out why 8 week plants look like they 3 weeks old?

Click to expand...

Probably root bound them keeping them in smaller pots

There’s two three week old autos in the middle. The bigger ones two are 7 weeks and two are 8. I definitely had problems with watering and ph the first two weeks which slowed them down.

This one is coming up on 6 weeks, seems fine to me.



But anyway I guess I’ll wait a couple more days and see what happens before adding anything.