Nutrient problem and how to fix. Progressing rapidly

[Steelkiltjones]

Fighting a bit of root rot. I thought this was a sulfur def but added epsom salt to the reset and it seems worse. 3 teaspoons per G of water.

 

[Pushrod Monkey]

We need more information such as EC, pH and whether both have been rising or fluctuating. Have you looked at the roots?

 

[Ponky]

Root rot. Looks like it's winning.

 

[Ponky]

Hydrogen peroxide. About all you can do.

 

[LexLuthor]

3 teaspoons of epsom salt is way too much. 1 teaspoon is 5 grams, so 15 grams per gallon is toxic. The correct dosage should be about 1 gram per gallon, which is about a 1/4 teaspoon. You might have other issues before that, but the epsom salt ain't helping.