JeZtur:
I live in Phillips, WI. I have run into a similar situation as you have with a heater for a large tank. I have a 110 gal. tank and had to purchase a new heater. I purchased a 500 watt AZOO Titanium Submersible water heater for my tank. I have found it works quite well for my needs. I purchased it through Dr.'s Foster & Smith in Rhinlander, WI. I ordered it online and have been well pleased with their support in helping me in choosing this particular heater for my tank. HOWEVER, it cost more than $100.00 in its inditial cost. Then don't forget to add shipping and handling costs, too. I would suggest in looking online at their aquarium supplies for tank heaters and see what they may have. If do not find what you are shopping for, call their customer service department and they will help you as much as possible. I hope this information helps you in your endeavor. Good Luck. David