I’m trying out a Growtube on one of my grow bags this year – I saw it in the catalogue and thought it was worth a try – I use grow pots in my other grow bag. If you’ve ever used grow bags, you’ll know that they can be a hassle to water because the compost washes out of the bag.
I’ve found that the growtube is good, easy to put together and to use. On the down side it does leak a little but it’s better than losing compost. And overall I think that Grow Pots are probably better products to use.