Tunze ATO 3152 vs 3155

[cadugauch]

I have a 34 gallon red sea max and want to implement the tunze ATO. Any big difference between the 3152 (nano) and the 3155 (universal) in terms of safety?

 

[Dmorty217]

The 3155 has the laser eye instead of a float valve so I would buy the 3155, that's what I have

 

[Solov]

3155 is awesome. It's not easy to impress me (especially for ATO), but this thing did! High quality system.