I have been running my eko 25 for about a week now. I am still tickering with it a little bit. mark from AHONA has been a big help. I changed some settings but i am still going through more wood than seems. Right now I only have 120 gallon storage tank hooked up. Mark said to try that tank and see how it goes. i am trying to see if I can cut down on wood consumption. it seems I have to put wood in every 4 hours. I dont know if hooking up more water storage will help or burn more wood. i am heating a 2800 sq house i built last year so it is very well insulated but i also hooked up a fan in the basement to heat that a little. any ideas will be a help. i ma trying to see if it only needs to be filled after 8 hours in case I cant go home from work during the day.