Smart ATO Nano has a Unique Hang On Back Design

The Smart ATO Nano is the latest new form factor from AutoAqua, the company that dove headfirst into shaking up the auto top off device segment of the aquarium market. AutoAqua first made its mark with the very small Smart…

Reefology ATO: Using Float Valves for Auto Top Off

After you’ve learned how to mix proper seawater for your marine/reef/saltwater aquarium, the next most important concept to understand is the management of evaporation, and the automatic replenishment of water lost to evaporation. Whether you have a nano aquarium with…

Tunze Osmolator 2 Has Been Completely Redesigned

The Tunze Osmolator 2 is the company’s long awaited follow up to one of the most popular auto top-off solutions in the wider aquarium hobby. Power users of the Tunze Osmolator would be hard pressed to find much to improve…

The Best Auto Top Off Devices For Saltwater Aquariums – Reef Builders Gear Guide

Salinity is one of the most important parameters to maintain in a saltwater aquarium. Throughout the day water evaporates from your tank, but it’s only the freshwater that evaporates, and the salt is left behind. To maintain proper salinity you…

Aqua Medic Refill Fix Nano ATO

Refill Fix is a new low tech device from Aqua Medic that is ‘designed’ to provide a small amount of make up water lost due to evaporation. We would only loosely describe the Aqua Medic Refill Fix as being designed…

Reef Factory has a Bold Vision for the Aquarium Internet of Things

Reef Factory is a brand new company out of Poland with a very ambitious vision for monitoring the modern reef aquarium. The catalog of Reef Factory devices includes a broad assortment of focused sensors and controllers to keep reef aquarists…

EHEIM Waterrefill Uses Completely External Water Sensor

The Eheim WaterRefill is a boxy looking Auto Top Off kit which could be forgiven for appearing like just another ATO, but it’s actually using a relatively new approach to sensing water level in aquariums. As far as we can tell,…

No sump? Try the XP Aqua Sumpless ATO

If you have a tank without a sump or filtration chamber (like in an all-in-one) and you’re looking for a way to take advantage of automatic water top offs, check out the XP Aqua Sumpless ATO. The design uses the…

EasyTank Is an ATO For Tiny & Nano Reefs

If you’ve never heard of a ‘glug jug’ then you are lucky to be experiencing reef tanks in our current golden age. But back in the olden days, well before there were any top off devices besides mechanical float valves,…

Elos America tabs Bashsea to deliver life-support systems

Two of our favorite companies — Elos and Bashsea Aquatics — are teaming up to deliver a pretty incredible complete aquariums system. Elos America has tabbed Bashea to build and co-brand the life support systems for their line aquariums.  The…