Anjum Posted November 29, 2022 Share Posted November 29, 2022 On 11/28/2022 at 5:01 PM, nabokovfan87 said: Question for everyone who has one of these. I had an old eheim jager and it got stuck in the "nope" mode and was very difficult to get to function correctly. I generally try to get a heater with a certain wattage / precision, but I just don't trust a lot of the "made for a 5 gallon tank" style of heaters because of my experiences with them. Here's my dilemma. I have a need for a QT tank and I need a heater that will keep it a certain degree above ambient. For most heaters, the range I need is slightly higher than the normal 10 degrees above ambient limit. So I almost always upsize the heater. Doing that, means it doesn't usually fit the 10G tank height too well and that leads to the constant "low flow" warning. I have purchased the 100W version and it's on its way. I fully expect winter temps to get close to the low 50's/high 40's in the house (bad insulation, thin walls, really cold nights) and on my 29Gs I am running 200W heaters to try to keep those at 70-72 degrees. At the old house, I was running two 300W heaters on a 75G to keep those temps relatively stable without killing the heaters on full. (or a 200 and a 300) Has anyone used the ACO heaters in such a situation and have an idea of how high above ambient the 100W heater can take a 10G tank? I fully expect it to work, I just want to ask if anyone has run one in a similar situation. Secondly, does anyone recall what the watt / gallon "rule" was when you were sizing heaters for a certain degree above ambient? I would assume the 100w heater would be more than sufficient to raise a 10g as much as you wanted. I put 2× 100w ACO heaters on my 29g last year as I was needing to raise the temp 15-20°F over ambient temps. I probably only needed 150w worth of heating capacity, but the 50w wasn't available yet. Now that we have an adequate heating system, I only need to raise temps about 10° over ambient & one 100w would probably be fine. Once I have another tank to set up, I'll pull one & see how it goes. Link to comment Share on other sites More sharing options...
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