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Browning of leaf edges

Soilwork

Member
Joined
22 Nov 2015
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559
Anyone know what causes this? I'm using EI NPK Mg. I'm not dosing micro nutrients but I have a soil substrate.

Light about 40 PAR and co2 green drop checker so not 100% sure it's at 30ppm. I'm thinking it is nutrient related.

Tapwater is naturally soft 10ppm Ca to 1ppm mg. I have additional Kso4 and cacl to hand but neither made any noticeable effect. The calcium just gave me a Chalkie tank rim as the water levels evaporated.

I also have profito and a trace mix supplied by aquarium plant food.

Any thoughts?
 
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