AquaIllumination AI Axis Centrifugal Smart Controllable Aquarium Pump - 400 GPH, Ultra Quiet Energy Efficient (Axis 40)

Wonderful. Powerful, with continuous flow and precise settings via the app. Perfect design.

Finally, a small pump that's I can control with my phone that has al the power I need. I have ai hydra 64 and a nero now with this, I just hit feed mode and in 10 minutes everything is back to normal. Beautiful!

great for 40 or under 40g tank.smart app can control

The quietest pump I have used in 15 years of reefing. App, Mobius, is great and small AIO sump footprint is a plus! Highly recommended so far as time will now tell how well built it is.

I have been using AI pumps for awhile now. I have 2 Axis 40 return pumps, 2 Nero-3 power heads & a pair of orbit 2’s. They are all easy to clean, and in two years I’ve had zero issues with any of them. So, I might a s well stick with whats works so I bought the AXIS 90 (because there was a price drop) and plan to use 2 of these in my new 100g build that I am currently building now. While I won’t be actually installing the pump for long term use, yet, I did need 1 for the water test for the tank & sump to get the math right. But I imagine that when this tanks goes into service (October) I don’t see any reason to not have any reservations about using them.And, even if I did have a problem with it I would call AI directly as their support it absolutely top-notch! Just remember to register it with them when you do purchase it in the case you do get a bad one, and they will replace it lickety split! And then you simply return the bad one for them to examine as to why it failed. AI is a great comapany to work with.