Do organic grows need to be flushed?

I'm using Bat Guano & molasses so do I still need to flush before harvest? I understand the importance of flushing but I never used any chemicals for the soil, therefore I dont imagine there being any salt buildup and whatnot. Any tips would be great:leaf:
 
I might, but I'm also afriad of drowning the poor thing lol She's only in a 1.5 - 2 gal pot and I've never gone about intentionally flooding a plant before.
 
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