Heater for IM 25 Lagoon

Chunkyfuzzbucket

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I know there are many threads regarding heaters, but there's so much conflicting information, and I'm having trouble settling on a heater that
1. Will be enough wattage, and
2. Will be able to fit the IM 25 Lagoon in the AIO chamber

I would like to eventually get 2 heaters for redundancy, but just want to get my tank cycle started for now.

Whatever heater I get, it will be hooked up to an Inkbird Controller

I was looking at the eheim jager 100w, which is 12.2 inches, but the im25 is only 11.5 in the pump return. And I don't even know if 100w would be enough as the room temp gets down to 60 in the winter

Or a 100w Aqueon preset heater, but not sure if those are reliable, but is small and will easily fit into the aio chamber

Would a single 100w be enough? Do I need 150w? Or should I be doing (2) 75w?

I appreciate any help!
 

George03

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100 watt should do fine I have mine in the display, one for backup, depending on your temperature region. My 25 AIO tank stays at 79 year round in NH.
 

Daasmo

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I have a 100w BRS titanium angled in the return chamber. I do have to unhook one side of the return to get it out.
 

George03

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eheim jager 100w yes it has a thermostat. has a light when on, it run occasionally for a few minutes. 18 inch sides.
1772299587509.jpeg
 

Daasmo

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I looked on the inkbird app. Looks like it will turn on for about 30 minutes then be off for 1.5 hrs. That was last night in a room which stays around 69°.
 
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Chunkyfuzzbucket

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I looked on the inkbird app. Looks like it will turn on for about 30 minutes then be off for 1.5 hrs. That was last night in a room which stays around 69°.
I assume you have the inkbird model with WiFi? I didn't realize it can give you stats
 

Tahoe61

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20260228_131149.jpg


This is what use on my IM 25 lagoon. Nothing fancy, decent price, gets the job done, and doesn't take up much room.
 

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