Aquatop 400W Titanium Heater with Controller – Fully Submersible - Up to 125 Gal – 68-92°F Adjustable Temperature – for Fresh and Saltwater – TH-C400

Love this heater. Set it and leave it. See the temperature at a glance. Very easy to use. Great durability, works great, and well worth the money. I'm very happy with this purchase

9 months later going strong still. Little bit of fluctuating but nothing crazy. I ended up looking it up to my inkbird and keeps the tempature very stable now! Highly recommended

I have used these for years on ALL my tanks. When you have giant tanks (90 gal, 125 gal 210 gal) these are the best option outside of very expensive custom systems. Great for smaller tanks too. I only use these.

We all know just how crappy and sketch just about any brand of heater is. Even the best will let you down. This one doesn't cost an arm and a leg. Has a fairly accurate controller. By my Hannah hi dollar tester it's always a consistent 2° cooler in the tank than my setting. As long as it stays the same I'm good. It does. 1st one lasted almost 2 yrs. Which for these things aren't bad. Good enough I bought another. Put it that way.

These are great, I've had one running non stop for 3 years without issues, it has a memory so you don't need to worry about setting the temp again.No glass to break is also a huge safety factor.The temperature probe keeps the temps stable and true, I keep the probe in the sump just in case the tank flow has stopped.Very vital piece to your livestock's health, a bad heater could easily wipe out your whole tank.

These are the best heaters you can buy. Worth the high cost. Never had one fail and I have a bunch.

I bought this expensive 500 W titanium heater expecting it to be top-of-the-line. It was more expensive than most super shame because the one time I choose to order online instead of shopping local products and now I’m almost 100 bucks. Can’t find any information on how to fix it. Allows me to adjust temperature although produces zero heat tested different outlets. Try everything expected more out of accompany like this. I hope they can make things right.

My favorite feature is definitely the fact that you cannot adjust the heat without putting your hands in the water. The digital readout makes it super easy and the thermostat is accurate. I'm using these in my ciclid tanks so that they cannot break them like they do the glass ones. They are also amazing in turtle tanks because turtles are definitely too rough for glass heaters.