Corals can regulate internal pH

Researchers have discovered that Porites cylindrica are able to maintain constant pH within their calcifying fluids. This mechanism may help certain corals cope with ocean acidification. It may also explain how SPS corals can grow so well even in pH-suppressed captive environments.

This aquascape is pretty darn relaxing

This aquascape isn't the most dynamic or innovative, but through a combination of its high video production value, the tranquil music, and the neatly arranged aquascape itself, it is one of the most relaxing aquascape videos we've seen. Y'all have a most excellent weekend!

Five glorious gallons

God is in the details. This is Ohko Canyon. I think going fishless might have been the better call because even tiny neon tetras ruin the magnificent scale of this nano aquascape.