I've only used GeoFlora once, and I didn't flush...
I don't think it's necessary, because GF nutes are considered organic, and you don't want to flush out all the beneficial critters.
I believe they even recommend minimal runoff when you water, so you don't wash the microbes out.
I don't think it's necessary, because GF nutes are considered organic, and you don't want to flush out all the beneficial critters.
I believe they even recommend minimal runoff when you water, so you don't wash the microbes out.