Well first of all Flushing is for a Chemical Grow in soil that has nutrient salts built up in the soil. Hydro guys do not Flush because they monitor their PPM with a tester. Therefore they do not have excessive nutes that need to be flushed away.
For an organic grow you do not flush, because you can not flush the amendments out of the pot. They are not water soluable like Chemical nutes. Only a bit of the organics are converted into NPK at a time, that is why its very hard to burn using organics.
And Molasses is for Organic growers, you guys who are using molasses on a chemical op are just wasting money. The sugars are going to waste and the only benefit you are getting is a few trace elements.
Using a technique from organic growing is not going to help your chemical op. You are not understanding the "Why" behind why it works for organics.
Its all about the Microherd. The sugars are not used by the plants at all, instead its used by a thriving microherd to break down the organics into a form that the plants can uptake.
Chemicial grows have no microherd. Therefore cannot benefit from sugars in the soil.
What you are doing when you flush a chemical soil op with mollassas water is your flushing away nute build up ( which should not be there in the first place ) with an expensive nutrient water. Nutrient salts build up over time when you over fertilize.
The molassas does have some water soluable nutrients in it. So you are trying to flush out nutes with nute water... The sugar does nothing for you.