ato pump

So since the neptune pmups are junk I bought an tunze ato pump and used a step down transformer from 24v to 12v but it's pulsing. So it is like it's getting intermittent power it pumps then shuts off even with the ato line disconnected any ideas?

I’m the only one in my home that really handles the care to the tank. My wife is afraid to do anything to Adjustments or anything. out of most of the equipment I’m going to update the Ato is one I don’t currently have, what is a good one to go with?

Duetto Dual-Sensor ATO Aquarium System - XP Aqua

Anyone have any recommendations for an ATO for the IM Nuvo 30L gallon? The Tunze brand keeps coming up but I'm not about requiring the "most expensive" or top of the line. I just need one that works well.:) Thanks!

Hello everyone, I have a 55 gal tank. Is it worth it to add an ATO to this tank? I do not have a sump for this tank. Just a filter. In you experience was it worth it to add an ATO to your setup? Why?

I have the Tunze Osmolator ATO, and it works great. However, I'm frustrated with the noise. It's a loud little pump, and my ATO container is outside of my stand. Is there a different pump I could buy to replace the tunze pump that is as silent as possible, but still works with the little...

Looks like my Duetto ATO Pump went out on me. I was reading you can get a replacement through warranty, not sure how long that warranty is for. Mine was ordered Nov 2019, so probably outside warranty. I need to know if I have to go through XP Aqua to get a replacement pump, or if other pumps...