Lock up on nutrition.

[Jonnyangel]

I’m growing in coco . Third week. I’m feeding them with Fox farms food every four days. They are yellowish not green. What should I do?

 

[golfnrl]

I’m growing in coco . Third week. I’m feeding them with Fox farms food every four days. They are yellowish not green. What should I do?

Hello...Can you give us a little more info? Please give us the details about your grow. How much are you feeding at a time? Your medium looks a little dry. Coco should never be dry and should be moist, not wet or soaking. Do you monitor PH or EC? Are you running straight coco? Do you supplement with Cal/mag? You coco needs it. What kind of light are you using?

Generally, a light lime green color is an indicator the plant is not getting enough nutrients. But without more information its hard to say with any certainty.

 

[wannabeagrower]

Could it be over-watered or under-watered? It reminds me of this picture on this page showing an overwatered seedling. But I also saw an underwatered seedling that looked almost exactly the same on that page.

If you look at the examples they seem to think a seedling your size need 3-4 cups (750 mL to 1 liter) of water every few days. So if you've been giving more or less than that, maybe it's possibly caused by watering?

Also, are you using the hydro version of Fox Farm since you're in coco? And have you been checking the ph of your water? The pH being off can cause nutrient deficiencies even if you're giving the right nutrients. I learned that one the hard way!

 

[Ckbrew]

Nutrient deficiency caused by inadequate feeding, incorrect pH, or both, maybe to much heat. Need more information on the setup.

 

[Allotrope1000]

I second @golfnrl and @Ckbrew's comments! Are you growing straight, 100% coco coir? I honestly have never heard of anyone doing so. Usually, growers use 70/30 or 50/50 coco/perlite. If 100% coco, you need to add a CalMag supplement and proerly adjust pH pretty quick. The cation exchange capacity of 100% unbuffered coco will wreak havoc on your plants.
Simple to fix, though. A common new grower error. You are still learning (as we all are).

 

[Jonnyangel]

Hi thanks for the feedback. I’m using 100 % coco . My tap water has a PH of 9. - 8.5 . So I just tried adding lemon juice and it brought it down to 5.5 . I’m going to pick up some cal /mag tomorrow. I have my light about 18 inches above. It’s a 1000 led spider farmer brand. I’m trying to water every two days because it looks dry. I do test the soil to make sure I’m not overwatering. I’m using fox farms nutrients stuff every 4 days. I’m hoping it will help now I know my PH was high . So what do you think about what I’m doing so far. Like any help.
Thanks JonnyAngel

 

[Ckbrew]

The pH of the tap water is irrelevant. The pH needs to be read after nutes have been mixed, it is the last thing to be added to the nute solution. Why are you feeding only every 4 days? If you are not using calmag you need to start. It won't get better with out that. It is almost impossible to over water coco and it should never be left to dry out. Some perlite in the mix will help with aeration, something to do on the next run. Go to the main GWE site and type "coco" in the search bar. Then start reading. Knowledge is the key to learning.

 

[Allotrope1000]

I second everything @Ckbrew said!
- mix half bottle strength nutes, add calmag, then check pH.
- water everyday.
- add 30-50% perlite for next grow.
- please read the GWE tutorials. The info contained therein will make you a better grower