Hydrogrower
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Joined: Sat Feb 18, 2017 2:37 pm

Hydroponic tomatoes. Something is wrong

Ok, so this is my first time growing tomatoes using Hydroponics and I have noticed that all four of my plants are showing some very weird symptoms.

The leaves are dying in between the veins of the leaves.

I will admit, I am using cheap soil due to my usual supply not being in stock. Does anyone know what this could be?? :cry:
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imafan26
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Posts: 13961
Joined: Tue Jan 01, 2013 8:32 am
Location: Hawaii, zone 12a 587 ft elev.

Interveinal chlorosis is classic magnesium deficiency. Most likely your pH is also too high. I have not seen soil used in hydro too much. We did use coir and perlite but it was a lite mix with a lot of perlite on an ebb and flow system. We used it to grow carrots and radishes. Tomatoes were grown in Dutch buckets with cinder or hydrdoton.
If you are using a hydro nutrient mix, make sure it is for tomatoes and it has magnesium, otherwise you will have to add magnesium sulfate.
https://edis.ifas.ufl.edu/cv216



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