My heater went out 2 days ago and I'm frantically doing research for a new one. I wasn't super impressed with the one I bought but it was only $6.55 this one: Amazon.com : 100 Watts (Tank Size: 20 to 33 Gallon) Adjustable Aquarium Heater Anti-explosion Submersible Fish Tank Water/ Temperature Range 18~33'c (65°f and 93°f.) : Pet Supplies It also could only heat my tank to 86 with the dial all the way up, making me think it was too low of a wattage for my tank. Its a 20 gallon long. Do you think if I bought the same heater just 200 watts it would work better? Does anyone else have experience with blue aqua heaters? Was mine just a fluke or should I buy a different brand?