Dustin's Blog — Dissolved Oxygen

FAQ's and troubleshooting for aquarium air pumps, air stones, oxygen-producing plants, etc. Read Time: ~10 mins What is dissolved oxygen, anyway, and why do aquarium people keep talking about it?  Brace yourselves for a super technical definition.Dissolved oxygen (DO)...is the amount of atmospheric oxygen dissolved in the water. It's mostly introduced through water surface movement, so a white water rapid will typically have more dissolved oxygen than a still swamp. Why does dissolved oxygen matter in aquariums? Simply put, because your animals and plants need to breathe. It's a common aquarium myth that fish pull oxygen from water molecules when...