Not recommended in dwc unless is the final flush, i did it in dwc recently and in 1 week the water solution got bad (shitty smaell) even using peroxide, ph went down 5, and some leaves got dry. I will not do it again.
Because its starts brewing all sorts of microbes. Put molasses in to a bucket with some fertilizer and a beneficial microbe product and in a few days I'll be foaming and smelling pretty sweet.
I Agree, tested and it suck in liquid system (DWC), hopefully I will recover everything but the dammage was big (50%). Still 1 month to finish in flowering.The only thing stopping most resevoirs becomeing a mouldy disaster is the lack of sugars for microbes to feed on , see no positive reason for adding them in molasses to any liquid system.
Molasses works very well in soil or compost and is cheap enougth in bulk from the right source to use extensively in the garden , but feel the risk of moulds outweighs any possible benefit in hydro.