How do you store frags in an already packed tank?

[kwirky]

I'm running out of room for new colonies and I'm hitting the "no more coral" point pretty soon (leaving space for proper grow out). Those of you with tanks bursting at the seams, what are some of the space solutions for frags (sps)? Setting up a dedicated frag system is pretty much out of the question for quite a while.

The most clever I heard so far was a guy using Tunze powerhead magnets strapped to egg crate, so he could hang the frags against the glass.