Yeah, now I get it, since it happened really overnight it could be the peroxide. Maybe you should be careful what products you use near your box. Could have been a bug spray or something toxic and you would never know you got it on your plant.
Regarding your ppm, most people would consider 800 to 1200 ppm much too heavy for a plant that age, probably EC 0.8 to 1.2 would be more apropiate. That means you are giving it double what she might need. By keeping soil wet and soaked in nute water you also don't leave much possibility of proper ph swings and the much needed dry periods between waterings to help the roots stay healthy and strong. When the plant is not drinking and leaves are leaning down, it's already a bit late, roots were effected. Most probably by the swampy environment that tends to acidify if you leave it like that.
I must admit the droopy leaves made me think its something related to the soil, as I wasn't expecting some peroxide drops to do more than leave some spots on leaves. That's powerful stuff if it can affect the turgor of the leaves it lands on.
Regarding your ppm, most people would consider 800 to 1200 ppm much too heavy for a plant that age, probably EC 0.8 to 1.2 would be more apropiate. That means you are giving it double what she might need. By keeping soil wet and soaked in nute water you also don't leave much possibility of proper ph swings and the much needed dry periods between waterings to help the roots stay healthy and strong. When the plant is not drinking and leaves are leaning down, it's already a bit late, roots were effected. Most probably by the swampy environment that tends to acidify if you leave it like that.
I must admit the droopy leaves made me think its something related to the soil, as I wasn't expecting some peroxide drops to do more than leave some spots on leaves. That's powerful stuff if it can affect the turgor of the leaves it lands on.