I do have the model 3000 Octopus. It was in use for about four years on a reef aquarium which I recently took down. I only used it for heat control, lighting and ph control for a kalk-reactor. This will soon be put back into use for a planted tank I am setting up right now. I do wish I had gotten the software package for it as it would be much easier to program and monitor off the computer opposed to the on system menu.