Feeding schedule

The flush is to remove excess salts from the soil. Giving the bloom nutes a fresh start... It is really up to you, If you have been using the nutes at recommended dose then I would say use it. If you have been reducing the amount, say half recommended dose I may not use it as wouldn't think enough salts have built up to make a difference. Although over the time span of a grow maybe... Your plant, your choice. Its all a learning curve...Good luck