i have eko- 40 with 500 gallons of storage heating about 3000 square feet with baseboard heat.i useally light a fire when tank temp is down to 150s within a couple of hours the tank is up to 185 or so and house is always warm. the boiler idles alot am i wasteing heat by not storeing it. it seems most people use around 1000 gallons or so should i add 500 more gallons? opinions are welcome. thanks dave