Grow Bag??? Hydro??? pics and questions

[tonzeejee]

I was fortunate enough to be handed a grow bag (not the kind you plant). I've never seen or heard of one before, but the person who handed it to me says it's the easiest hydro method on Earth.

It's a green bag, maybe 1 gallon with a red bag inside. Then inside the red bag is what looks to be some sort of growing medium like this:

http://www.stevespanglerscience.com/...rbent-polymers

Hydro fans - would someone fill the medium (half gallon) with water and nutes and empty by pouring daily or every other day?

Anyone seen or used one before?

Pics attached.

[420Grower420]

seems like those tomatoe growing pouces from tv, dunno how effective they are...