You are doing it wrong. Here’s what fertilizer to use on what houseplants

9. 🌻 Epsom Salt (Magnesium Sulfate)
Why: Helps green up yellowing leaves and supports nutrient absorption.
How to Use: Dissolve 1 tablespoon of Epsom salt in 1 gallon of water. Water plants once every 4–6 weeks.
Best Used On: Fiddle Leaf Fig, Monstera, Peace Lily (if magnesium-deficient).
Avoid On: Plants already thriving in nutrient-rich soil—ZZ, Snake Plant.