Don't flush...this is the time period where the quality really comes in, but only if you continue to feed your plants. Flushing is a debunked but oft repeated method that gets passed around by ignorant newbies through old forum posts. The latest study on flushing supported what any decent grower already knows-it's pointless and no one could tell flushed from unflushed weed in a real world test. The test group even preferred the unflushed weed, probably due to the fact that it had another week to pack on terpenes from the nutrients it was getting.