Growth: Why shouldn't I use filtered water to grow microgreens?

Filtered or demineralized water may sound particularly pure, but it contains hardly any minerals – and these are precisely what microgreens need for healthy growth. Without these nutrients, germination can be weak, growth slower, and pH levels unstable. Water from reverse osmosis systems or ion exchangers can also be problematic because it removes important buffering substances or introduces unwanted sodium. Our recommendation: Use fresh tap water – it's usually perfectly suitable and provides exactly what your microgreens need.