One bottle of this will last a small garden grower a good long time great wetting agent, I also run this in between runs in my aero cloner to clean everything out of the
lines and sprayers and I leave my clones in it for 15-30 minutes before I change water produces really nice white healthy roots.
I use to flush plants between vegetative stage and flowering stage at the rate of 1-2 ml per gallon. Then run pure water for the next 2 waterings, before anymore feeding. Resets the biosphere removes extra salt build up if you have any and just gives them a nice reset before flowering. Also flush at the end of flowering the last week at the rate of 1-2 mls a gallon then again nothing but fresh water afterwards till harvest.
Another great product by BAS!