Most fish require a temperature of about 74 to 77 degrees F. Unless your house remains in that range all the time, you'll need a heater. Aquarium heaters come as hang-on-the-tank or submersible models and may have a numerical setting or simply an up and down setting. Go for the submersible with a numerical setting.
20, 55, and 75-gallon tanks would need two or more sponge filters to accommodate these sizes. Also, larger tanks would require a lot more filtration and sponge filter capacity and more sponge filters would be able to do just that. Again, the number of sponge filters would heavily depend on what species of fish you’re keeping in a tank. All of those are chemicals! And you can use a chemical filter to remove them from your aquarium. But chemical filtration can do more than just remove chemicals. Depending on the type, a chemical filter can also remove other pollutants – some of which are just an eyesore but others of which can quickly kill…. Heavy metals, such as copper. Check the pH Level. The first step in putting a filter in your fish tank is to check the pH level of the water. A good pH range for most freshwater tanks is between 6. 5 and 7. 5, with some types of fish preferring a higher or lower range. If the water’s pH levels are too high or low, it can be harmful to your aquatic pets. PLHA0W. 82 27 10 223 455 384 53 150 394