That is what i have been told my Barrie, and i plan on doing this once i have got my tang and my discus tanks setup,and sorted out the others to make room for some smaller breeding tanks.
Im going to try cut down to:
4foot South american/Discus tank-Planted so heaps of light
3foot South american tank-unplanted so wont need good light
3foot Axolotl tank-only got 23W of lights and no heater
100L discus growout tank-Will be turned into Lelupi or Jullie tank afterwards.
And a couple small 'Breeding tanks"
3 3foots setup,2 2foot,1jeboR338,2 30L, 1 25L.
Our house doesnt really have much in the way of insulation.
And the heat goes straight out the 8 thin windows upstairs :-?