Can I Convert My Freshwater Aquarium Into a Saltwater Aquarium?
Freshwater aquariums are often the starting point for those new to fishkeeping. It’s a lower-cost entry point and generally more forgiving than saltwater aquariums as you learn the ins and outs of maintaining your tank. But what if you started with a freshwater aquarium but are now ready to switch? Must you purchase everything from scratch to set up a new aquarium? It’s a question that we hear often. The good news is that you CAN convert a freshwater aquarium into a saltwater aquarium with some planning, preparation, and a few key steps. This article will discuss the pros and cons of having a saltwater aquarium and some other essential information to help you decide if this is right for you and your fishkeeping journey. If you are ready to make the change, we’ve also included a step-by-step guide to switch your tank over properly. Let’s get started… Can You Put Saltwater Fish in a Freshwater Aquarium? If the reason you are considering changing to a saltwater aquarium is a love of the bright, colorful fish, you may be wondering if you can simply place the new fish in your current aquarium setup. Spoiler alert: Don’t do that! Saltwater fish have adapted and evolved to thrive in environments with a high salt concentration. This means changes in their bodies at a cellular level and how their bodies process water to eliminate the excess salt. When placed in freshwater, they cannot adjust to the new environment. As they take in the water, their cells absorb it through osmosis, causing them to swell. Ultimately, this is a fatal mistake. If you want your saltwater fish to survive, let alone thrive, you must ensure that they are in a saltwater environment.