IM Nuvo 20 AIO

Scotty8284 · Aug 28, 2022

I am starting a new build using the IM Nuvo 20 AIO. I already have a IM 100INT, and this is my first experience with an AIO. The first question I have regards the water level in the return section. How much lower than section 2 should I keep it? Or is it alright to keep it even with section 2? Also, which compartment is preferable for the heater? I was thinking the return section, but I'm not sure. Thanks for any guidance!

BrotatoSalad · Aug 28, 2022

Fun tanks for sure! Here's my two cents on your questions.

How much lower than section 2 should I keep it? Or is it alright to keep it even with section 2?
- I keep my return chamber in my AIO a little bit lower so the second chamber "overflows" into it. Not sure if it actually matters but that's how mine is running.
Also, which compartment is preferable for the heater? I was thinking the return section, but I'm not sure.
- I would put the heater into the second chamber instead of the return. If your ATO messes up for some reason that return chamber is the only one that'll not have water and running a heater out of water can be dangerous.

Looking forward to seeing how your build progresses!

Scotty8284 · Aug 28, 2022

BrotatoSalad said:
Fun tanks for sure! Here's my two cents on your questions.

How much lower than section 2 should I keep it? Or is it alright to keep it even with section 2?

I keep my return chamber in my AIO a little bit lower so the second chamber "overflows" into it. Not sure if it actually matters but that's how mine is running.

Also, which compartment is preferable for the heater? I was thinking the return section, but I'm not sure.

I would put the heater into the second chamber instead of the return. If your ATO messes up for some reason that return chamber is the only one that'll not have water and running a heater out of water can be dangerous.

Looking forward to seeing how your build progresses!

Thanks for your help! Your reasoning is sound and provided the insight I needed. Rock, sand and water are in. Tomorrow I'll work on the light. I'll take some pictures and start a build thread.

Acros · Aug 28, 2022

I agree with above suggestions. I have an IM25 lagoon and keep with water level about 1.5” lower than others in my return chamber. Heaters go in the second chamber, so they don’t get exposed in case the ato does not work.