My tip would be never to squeeze the cubes dry, shake um or leave them to dry out abit, but dont squeeze um. They loose alot of the air trapped inside, and they may have abit of spongey ness, but wont fluff back out to orginal size. Also i found in cloneing you had to try not keep the cubes too moist as they would turn green, presumably algae.
Best o luck. Take it easy.