Medium to be used in growbags in hydroponic cultivation

hi iam palnning to start hydroponic cultivation, have some confusion in selecting the medium for growbag type… please suggest me best medium for growing plants in grow bags. thank q

I have been trying out hydroponics for the last few months in a small way.
I  have been doing both the classic hydroponics using Direct Flow Techniques which is really without any media. They are mounted on gullies with the nutrient water recirculating. All I needed was net pots.

The other one is the  soil less media. Here I have used coco peat - which had been buffered and washed. I have used this for capsicum, tomato and seed less cucumber.

That’s my limited experience.