To free salmon stuck behind dams in Oregon’s Willamette River Valley, here’s what the U.S. Army Corps of Engineers has in mind: Build a floating vacuum the size of a football field with enough pumps ...

Both experts suggest using a python siphon to help vacuum the substrate (which is the gravel, sand or plants that cover the bottom of your tank) and remove your fish’s waste.

When many people hear “ammonia”, they commonly think of commercial cleaning products or the pungent odor that comes from cat urine. Yet, many experienced aquarium keepers know that ammonia is ...