Yeah I froze it alright, left the bucket outside before a 4 hour nap. And the rocks are very easy to syphon as I don't have to dig and shake up small gravel, the siphon just pulls the crap out of the crevices. I'd love to clear out more decor but I think it protects the smaller, weaker ones. My 3 africans are about 2" long only but have survived thus far.
Jack was tore up even worst when I acquired him 3 months ago. Also GT was the biggest and no fish messed with her. Until recently my 4" Red Texas was nipping at her fins...maybe it sensed terminal disease?