So I've been in the works of setting up additional tanks for holding mothers and fry and I've been thinking about the concept of heating a room to the required temperature rather than multiple tank heaters. By heating each tank I know two heaters are generally used in case of one failing. For running multiple tanks this can get both costly and power outlets can run scarce/overloaded. For using a small, centrally headed room you should have a much more constant temperature of your water. I would assume with this method a backup heater would be used in each tank.
I've got an oversized utility room that houses my furnace that runs much warmer than the rest of my house that I'm thinking of turning the other half of the room into a central fish location because of the heat and the 2x4 stands wouldn't look out of place. It's got a faucet and a drain for water changes and everything. I'm almost about the break out my Thermodynamics books to begin doing the calculations, but I'm curious what everybody here does for their fish room, heat the tanks or heat the room? Which do you find more cost effective?