I've noticed that there seems to be a lot of confusion, especially among new growers, about the term flushing. Flushing is often used to describe the process of running extra water through a plant to correct an overfeeding or deficiency issue. Flushing is also used to describe the 2 weeks of plain water given at the end of the grow cycle. So people have assumed that the final flush should be 3 times the pot size, what is normally done for an overfeeding or deficiency problem. To avoid further confusion I'm suggesting we stop using the term flush at the end of the plant cycle and replace it with cleansing. So here would be my suggested definitions:
Flush - The process of running 3 times the pot size of pHed water through the soil to address a possible overfeeding or plant deficiency issue.
Cleansing - Using the normal amount of plain pHed water the last two weeks of the grow to remove the remaining nutrients from the soil, thereby improving the taste of the buds.