Dissolved Gases in Marine Aquaria: Saturation Problems and Solutions

If you’re like most marine aquarium hobbyists, you probably don’t give a great deal of thought to the levels of dissolved gases in your system beyond making sure you’re providing good aeration and circulation. But under certain circumstances, these levels can get out of whack to the detriment of marine livestock. Jay Hemdal, Curator of … [Read More]

How to Reduce the Risk of Flooding with Hang-on-Back Overflows

Marine aquarium hobbyists whose tanks didn’t come with a built-in overflow or can’t be drilled to accommodate one (i.e., those made of tempered glass) sometimes choose to use a siphon-based hang-on-back (HOB) overflow to feed water from the aquarium to a sump. These overflows come in different designs, but they’re all more or less a … [Read More]