There are several points to share:
1. changing to LED wont save you much over metal halide in the winter, your heater just work harder with LED.
2. Basement sump is a big energy hog, keep the sump on the same floor of the tank and use a smaller return pump will save a lot of electricity
3. Insulate the sump, especially in the basement will help.
4. heat the room instead of tank water is more efficient. Use propane indoor heater will help if the room is heated by electricity.
1. changing to LED wont save you much over metal halide in the winter, your heater just work harder with LED.
2. Basement sump is a big energy hog, keep the sump on the same floor of the tank and use a smaller return pump will save a lot of electricity
3. Insulate the sump, especially in the basement will help.
4. heat the room instead of tank water is more efficient. Use propane indoor heater will help if the room is heated by electricity.