Backyard Aquaponics
A place to discuss aquaponics

My Thai basil have been yellowing slightly and not just along the veins so i know there is more than just an iron deficiency. I add potassium bi carbonate and calcium carbonate to my system each day so i can rule out those deficiencies as well. Based off classes i've taken i think that i'm dealing with magnesium or manganese. What would be the best way to treat this?

Photo's?

I grow Thai Sweet Basil and it does seem to show a iron deficiency before anything else,magnesium will be on the older growth and may have brown spots or neucrotic as there called, from my limited experience if its showing on the newer growth it will be iron,i address mine with foliar applications of EDDHA once per week,if you feel its Magnessium add this to your Foliar Spray mix,one tablespoon per US gallon.

Here are some pictures!

In my opinion the top pic could be calcium,the bottom two iron,someone like Mr Damage will be able to pin point it more accurately.