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HELP! Yellowish leafs

lambdacapa

lambdacapa

New member
Hello, this is my first ever grow and wanted some help. Is it normal it's so yellow at the centre? I'm growing in Coco coir and giving full nutrients. Also, how do I regulate properly light? Thanks in advance
 

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Hi lambdacapa. Your plant is a little pale. That could mean a couple of things, it might mean nothing. Your grow medium is dry. How do you determine when to water? When you water start at the center and work your way around the pot in a circle making sure you get the entire medium wet. Coco needs to stay moist. When you say you are giving full nutrients, what does that mean? What are you feeding your plant, how often and how much? What are your grow conditions? Temps? RH? and the most important, PH? How are you checking the PH of your watering solution? Absent pests and bugs, improper PH is the cause of most plant problems.

What light are you using? Describe how you have your light setup at the moment. There are a couple of tabs at the top of this page that you should take a look at if you haven't already, Plant problems, Growing Basics, and Example Setups.
 
golfnrl said:
Hi lambdacapa. Your plant is a little pale. That could mean a couple of things, it might mean nothing. Your grow medium is dry. How do you determine when to water? When you water start at the center and work your way around the pot in a circle making sure you get the entire medium wet. Coco needs to stay moist. When you say you are giving full nutrients, what does that mean? What are you feeding your plant, how often and how much? What are your grow conditions? Temps? RH? and the most important, PH? How are you checking the PH of your watering solution? Absent pests and bugs, improper PH is the cause of most plant problems.

What light are you using? Describe how you have your light setup at the moment. There are a couple of tabs at the top of this page that you should take a look at if you haven't already, Plant problems, Growing Basics, and Example Setups.
Click to expand...

Thanks for the response. I determine when to water by putting a finger in the medium a couple of cm in. I water around the plant and gradually increase size of the circle of water the more the plant grows. I feed her Silica (specifically the one by Advanced Nutrients) and Biobizz (for now just bio-grow). I adjust ph using a phmeter and biobizz ph adjusting products. Temps are in the norm. I feed once every 2-3 days, depending on how fast the water dries up.

I'm using a marshydro ts1000 light keeping it at about 30/35 cm from the top of the plant at about 25% intesity.

Thanks in advance for the help, will check the pages better : )
 
All of that sounds normal. Just to be sure your PH is in the 5.8-6.2 range right? Does Mars Hydro have guidance for your lamp? Dimmed to 25% at 12-14" or thereabouts sounds OK. Do you have a way to check the PPFD of your light output? Photon is a good free one. I use Photo Bio Phantom, There is some good info about measuring light here https://www.growweedeasy.com/learning-hard-lessons-the-easy-way

Are you measuring EC?
 
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