I don't get the seeded filters, surely if there is no load on the water then the bacteria will die off, if there is chlorine being gassed off then that will be killing the bacteria in the seeded filter anyway and even if it did live what would it be doing for the water? I also think temp is not important, cold water excites rays, I think it triggers the rainy season effect on them, my male is often chasing the female after a water change.So 100w total is good for 1k gallons then? Thats easy to get.
I never have water temp changes with my water changes. I have 3 100 gallon tubs i fill as holding tanks with heaters to get the water up to temp and they all have seeded filters running on them so the water is ready to go. 72 dollars a piece for the tubs which are normally sold as horse water troughs and they are a solid composite material so no metal to rust or anything like that. I figured i couldnt go wrong for the price and with a sump pump from the local True Value to make my life easier why not lol.