Well flushing is a Technique for growers who use chemical fertilizers.
And Molasses is a Technique for growers who use Organics.
But all the time you will see people who don't know what they are doing using Molasses in their Flush or trying to Flush an organic grow.
They dont understand the "why" behind using these Techniques. So they are using them in improper ways.
They think Molasses will make their chemically grown buds "sweeter" haha.
But plants do not eat sugar. Instead in an organic grow the microherd eats the sugar and thrives resulting in converting the organics from the soil into a form which the plants can uptake IE: NPK
This works in an organic grow to make bigger buds and Better tasting buds because of more Terpen production.
If you give your chemical soil grow molasses then you are wasting all that sugar because chem grows do not have a Microherd. Cheimical ferts kill the microherd. But some people seem to think they still have one....
They use molasses anyway and the only benefit they get are trace elements of NPK ect...
Its a waste of money and effort to use Molasses on a chemical grow because its an organic growing technique which is targeting the microherd to promote its vigor.
Especally the people who are chemical grows and they flush with molassas water haha.
The molasses water has nutes in it, its a weak amount but you are trying to flush out Nutes with a weak nute water.
You only need to flush to wash away the build up nute salts that are in the soil. This alows the plant to use up the extra nutes it has stored up in its leaf.
But if your an organic grower you will not have Extra Nutes in your soil Same if your an Hydro Grower who uses a PPM meter to monitor his nute level.
Those growers do not need to flush because they have no extra nutes to wash away.