Clearex how often should I use it in these last 2 weeks?

Tomorrow is Week 7 for my girls. I gave them clearex on Tuesday. I hear its good for flushing, but since I used it once should I use it in the water more times in the future? or is one time all you should use it on plants. I got it free and i've been trying to figure out what to do with it.

If you are growing in soil I see no advantage to flushing, hydro though I have never attempted so don't know anything about it per se. When you are flushing especially in soil all you are doing is starving your plant when she is trying to finish and needing what is available to produce its last flowers. I am sure you have noticed that many, maybe most produce large amounts of bud weight during this final couple of weeks. If you are washing the nutes out of the soil and not giving it anything to eat what does it eat? to produce the final product? Answer, itself. If you are making the plant consume itself, I doubt you can produce the same quality and quantity of bud. This myth of the flushing to produce a smoother taste, no chemical harshness, whatever is addressed in a slow dry and proper curing. This is the part where your chemical changes take place breaking down starches, sugars and such within the plant.
Here is a link posted by Riddleme. there is much other info available both for and against flushing but I for one don't subscribe to it.
https://www.rollitup.org/general-marijuana-growing/409622-truth-about-flushing.html