theoldmerchant
Well-Known Member
When you feed every other watering without flushing, all those nutrients can build up and create salt deposits. No bueno. The flushing process takes out all of the old nutrient build-up out of the soil. After the soil has dried out a little from the flush is when you can re-apply the nutrients to the medium so they are fresh and don't build up. You don't have to flush after every feeding but don't go too long without a good flush!