Plants turning very light green and tips turning brown

Strains: Blue Dream, Afgoo (2 of each clones)
In soil: vegetable potting mix (thinking of transplanting into better soil)
Light: 4 foot 4 bulb T5 6500k in all 4 ( running 24/7 for now) 3 1/2 weeks into veg.
PH: in between 6 and 7 (I use a water tester and its not perfectly accurate I shoot for 6.5)
Temp: 67-70 degrees ( this may be part of the problem)
Humidity around 50%
Fert: nothing right now because of the issue, but feed them a veg solution once

Problem: the two blue dreams seem to be doing better than the Afgoo, but they still don't look as green as I think they should ( compared to other pics of healthy plants). All of the plant seems to be affected, turning very light green with brown tips and minor curling on the afgoos The temp is running kinda cooler as they are in my garage and we are having a very cold long winter. The soil may contain to much bark making it acidic, but am not sure. I feed them one time only 2 weeks ago way under the recommended amount for their age. I noticed a couple days after that they looked a little off, so I flushed but it hasn't seemed to have any affect. I only water when the soil feels dry two inches down. The stems seem to be thick and perky but grow has slowed alot on the afros and the two blue dreams are pulling way ahead, but still look a little light to me.

Any ideas? Sorry for not including pics I posted this on my phone and plan to edit it at home later.

Barky soils will cause a nitrogen deficiency within a few weeks. Blue strains tend to need less nitrogen so will be less affected, but other than looking at pics, if its bark, you need to give them more nitrogen as bark like coco, leeches nitrogen.

Your watering habits are the first thing to resolve here as that is probably the source of all your issues.

In soil you want to go from just barely moist to totally saturated with runoff. You don't do the "two inch down" test, that is a recipe for disaster indoors. Depending on the current state of your root zone, the size of the container, and the aeration of the media it may take 4 to 7 days between waterings. Doing so more frequently, without any concept of the pH is most definitely an issue that needs to be resolved here.

The low temperature and moderately high humidity also speak to over watering because the plant isn't going to be using as much water when the humidity is high and the temperatures are low. Bring the temps up to the mid 70's, around 76, and the RH should actually drop a few points as a result. This will help reduce the chance of mold taking foot on your freshly necrotic leaf mass.

If you can do these things, fix the temperature and humidity, begin testing the pH, and water on an appropriate schedule that is a step in the right direction. Being that just about everything you listed was a little off I have a final suggestion as well.

Transplant your plants ASAP. I don't even need to know what brand of soil it is. It contains bark. That is all I need to know.

Find a good organic soil, no bark, no sticks. It should clump together kinda like wet coffee grinds. Enough that it holds shape when you squeeze it, but it falls apart easily and is not too clay-ey or muddy when wet. It should already contain some perlite (little white rock looking things). You are going to add more perlite to this mixture so you need to by a bag of that. You'll also want to get some crushed dolomite lime and a mask (the kind that painters wear) because the dust is super bad for you.

Mix 3 parts soil to 1 part perlite. This will give you a 25%+ aeration media content and really help your plant breathe when the soil is saturated. Add 1/2 to 1tsp of dolomite lime for every gallon of soil you have (depending on if the soil you pick has garden lime in it already).

Transplant the plants into this new mixture. Remove all the funky wet bark soil that you can without damaging the roots that are healthy. Put it into the new soil and just add a little water to get all the soil to settle in so you can ensure it is in good contact with the new dirt.

You will know when to water again by lifting the container. When the planter is really light, and I'm talking surprisingly feather light, you are ready to water again. It is going to take a few days, maybe 4, before it is ready. You don't want the plant to suffer, so this is a timing thing and it requires just the smallest bit of finesse. You'll figure it out, when the soil is just about to run out of "gas" you fill it back up, get about 20% of what you add coming out the bottom and removed as runoff to ensure that the soil is evenly balanced and any residual fertilizers are washed out without shocking the plant further.

As the roots fill the new container, and the plant shows you genuine "hunger," then it is safe to feed you plant at a proper pH. Let your plant tell you how hungry they are or how devoid the soil is. I think you need to research how the microbes in the soil break down organic molecules and how these are made available to the roots for uptake. It sounds to me like you are trying to feed the plant as though it were a hydroponic media.

Soil is organics. What you need to do is feed the soil, not the plant. When you feed the soil, the soil then feeds the plant for you. All you need is a 5 gallon bucket, a $15 air pump and air stone, an old t-shirt, and a bag of worm castings. A little pk guano doesn't hurt. Mix up the worm castings and guano in the shirt, tie it off, and submerge it in the bucket full of water. Run the air stone for a few days and give it a stir as often as you please. Feed your soil a little of this and watch them grow.

Then do a little more homework into compost tea brewing and you'll be happy you ditched your chem/salt ferts in your soil system.

Shit... I'm smoking some Sensi Star right now, mutant Kiwi/Lemon/Peach flavored phenotype I was lucky enough to find and preserve... I have no idea if what I wrote above is intelligible but I can always hope.

lol... wall of text much?

Blue Dream




Afgoo




lol should have removed that sticker lol

thanks Snow Crash

I went ahead and got some better soil from the hydro store and transplanted them. I got as much of that crappy bark I could out of it without hurting the roots. I also added another light 4 foot 4 bulb T5. They are in a we bit of stress from the transplant, and the my smaller blue dream seems to be starting to show signs like the others. The added light has raised the temp to around 73 - 75 degrees. Do you think I nut burned them in that one feeding? I hope the pics above help, sorry they are a little blurry, phone cam. Any help is much appreciated.

use Fox Farm Ocean Forest. PH 6.5 to 6.8
dont over water

I think it is more of a pH thing. Probably a stress issue also after transplanting.

I hope they pull through it. I was nervous as hell transplanting them. They have definitely drooped since the transplant.

Your nitro is too high and you're over watering. ( maybe try Smart Pots ? )............ IMO.

Just give em a few days they will spring back ! You should be just fine.

Thanks Kingofqueen, I have a good feeling, just have to stay positive I will give an update in a few days.

Well a friend of mine dropped off a few more additions to cheer me up last night
3 clones
1 purple kush
2 lemon OG kush
Made my night

The others seem to be perking up since the transplant

Things seem to be bouncing back


Blue Dream


Afgoo



The worst affected one

When do you think it will be safe to start feeding again?

Should I prune some more off the really bad one?