a flush i basically a harvest of mushrooms off each cake.
once you pick or flush the mushroom cakes, they need more water to keep making fruits.
this is why you dunk another 24 hours again.
you dont have to dunk but it is recommended and advised. you want bigger and more mushrooms right?
(most people are able to flush a pf tek brown rice flower cake anywhere from 2-8 times.)
the average is 3 flushes per cake
its this easy bro....
1.)colonized cakes
2.) dunk in cool, distilled water for 24 hours
3.) roll in fine verm
4. ) put in fruiting chamber
5.) watch mushies grow
6.) pick them off the cake when fully matured
7.) re dunk in water for 24 hours
8.) put back into terrarium
9.) watch shrooms grow
10.) pick them
etc......and on and on and on....
til your cakes are basically done or spent. (this means the cake is bruising blue a lot and has no more water or nutrients)
the cake could also be getting contaminated after 2 or 3 flushes