The cubes were squished to get the water out and for smaller volume of garbage. It would have been nice not to have to keep buying cases of cubes, but I guess there's no more convenient way of doing it really. You pretty much have to have something to hold the stems up and root the cuttings in.
Hey Bob, thanks for the description of your gutter grow.
I started using the neoprene collars with my cuts
and they grow to maturity in the 2 inch size.
I got my 2 inch neo at the local hydro store,
but you can find several sizes online.
Not must waste if any.