Monthly Archives: May 2026

Kalkwasser does not broadly “strip” trace elements from reef aquarium water. The more useful reframing is this: in a kalk reactor, high-pH limewater can help certain metals, phosphate compounds, and insoluble impurities settle in the slurry rather than...

Introducing The Avast Marine Porthole Mark II Modular (MIIM). For nearly twenty years, the Avast Porthole has had one simple job: to give reefkeepers a clear, top-down view of their aquariums. The new Porthole is designed to take reef photography and...