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What Is It and Why Do I Need It? – Part 2 – Freshwater Aquarium Salt

Many freshwater aquarists use or at least have heard of using salt in their freshwater aquariums, but few seem to know why. Most “read about it somewhere”, “heard it from someone”, or “saw it on the shelf so I must need it”. To some, it may be beneficial but to others it can cause far more harm than good.

What exactly is Aquarium Salt?

Aquarium Salt“Salt” is a very broad chemical term and can refer to an unlimited combination of elements. The salt used in freshwater aquariums is Sodium chloride (NaCl). This is NOT the same thing as what is probably in your kitchen and is NOT the same thing that saltwater aquarists use for their corals and clownfish. The “table salt” used as a condiment is mostly NaCl, true, but most table salt is Iodized Table Salt and contains iodine, de-caking agents, and possibly potassium or other trace elements. The marine salt used in saltwater aquariums is mostly NaCl, also true, but has buffers and other elements like sulfate, magnesium, calcium, potassium and others. All of these extra ingredients can range from unnecessary for to harmful to freshwater aquariums, affecting the biology of freshwater plants and animals directly as well as changing the water chemistry in the tank. For freshwater aquariums, use only salt sold as freshwater Aquarium Salt or pure NaCl like Kosher Salt or Rock Salt. Read More »

What Is It and Why Do I Need It, Part 1 – Activated Carbon

There are some products that you can find in every store that sells aquarium supplies and that every aquarist has purchased at some point or another, no matter how long they’ve been in the hobby or what type of aquarium they’ve had. Out of those stand-bys, how many of them do you really need, and do you know what they do (or do not) do for your aquarium? One of the most wide-spread of these “necessities” is activated carbon. Read More »

Schools Aren’t Just For Kids – Schooling Fish for your Aquarium Part 2 – Freshwater Species

African Three-stripe CatIn my last blog I talked about schooling fish, their interesting behaviors and some schooling species for your marine aquarium. If you have a freshwater aquarium, the list of schooling fish species is pretty long. Dozens of tetras, barbs, danios, and rasboras are available and new species are being introduced regularly. There are also several other types of schooling fish that you may not see in the average pet store. These colorful and interesting fish can really contribute something special to a home aquarium. Read More »

Observing Piranhas in the Wild (Not What You’ll See in Piranha 3D!) Part 1

Piranha woundHello, Frank Indiviglio here.  With the movie Piranha 3D in theaters, I though now might be a good time to write a bit about how wild Red-Bellied Piranhas (Pycocentrus nattereri) actually behave.  Unfortunately, no matter how outlandish the movie may be, there are people who will retain what they see and regard it as fact.  I still recall that, for months after the movie Anaconda premiered, I was deluged with calls from viewers spouting the strangest “facts” (I was working at the Bronx Zoo at the time…management had been approached by the movie’s production company, but had declined to become involved).  Read More »

Devilish Dovii – Tales of a Destructive Fish

Some days just don’t go like you expect them to…spilled blackworms on the fishroom floor, overflowing systems…all the little things that can make a good day go bad. I had one of those days a few weeks ago all thanks to my male dovii.

Juvenile DoviiMy guy is a bit of an idiot. He likes to hurl himself out of the water and smash into the water droplets that form on the glass canopy of his aquarium. At first, it was funny and cute (at least to me), but when he does it every hour, it starts to get old. He doesn’t just tap the glass, he hits the glass with such force that with the door closed I can still hear him make contact. One day, soon after arriving to work, I happened to get a call from the leasing office in my apartment complex. Apparently, water was leaking into the bedroom of a tenant below my apartment from the room where the tank is set-up housing my Dovii pair. Read More »