yeah,, I have tryed a flush on one and no flush on another back in my first grow,,and honestly the only difference I found was the flushing one's pistels(excuse any bad spelling) turned amber faster(the flush was 10 days,) so you could see the plants ratio of amber to white and growing to receeded pistels was different,making the flushed one look more 'finished' before chop,,but they both got roughly the same weigth,,the no-flushed weight more wet but dried to roughly the same,,
the finshed dry product was one(the flushed one) took alittle less time to dry,ha maybe a day or so less,,was all dried in the same box on dry lines but found no distinctive taste or effect difference. It was all the same strain and grown in same medium,both chopped after 12-14hrs darkness to help remove startches from the buds. sorry take from that what you will..
,,with this batch I will be trying an extended dark period and a final flush(more a leach of the soil) in the final 2-3 days and then no water to try to decrease water/moisture content when harvested,,,
but yeah,, Budswell is just a flashy name for bat poo,seaweed and bird poo,,, Any of the grow or bloom bat guanos would work the same so i dnt know if I would use it when the idea of a flush is to remove any nutes and not add any,,,