Once again, amazed by your kitties. I love love LOVE them. Question for ya, when your giraffe gets spooked, or you are changing water, does the top of its head fade in color like sand is on top of its head? Mine does... but if I reach in and pet him, it goes away (after a few minutes).
My land kitty made me mad by showing me how he learned how to balance on the balcony railing. (he's 20lbs and fat, and the railing is an inch by inch.. I took him in and brought him up to the giraffe cat and told him if he did it again i would cut him into tiny pieces and feed him to the fishies. He was like ok ok ok ok stoooop. Now I know how to punish him. He loves the little tanks, but hates the big ones that he knows he can fit in....
I was going to ask you, since you have set up the 600, has your electric bill gone up a lot?