March 15, 2025

How to Maintain a Freshwater Aquarium

15 Low-Maintenance Freshwater Fish for Beginners With Pictures

Nitrate is the end of your nitrogen cycle and is toxic to fish when it builds up. Individual species will have different tolerances to nitrate levels, so know in advance what levels your fish can handle. Testing your aquarium water is essential for maintaining a healthy environment for your fish. A reliable aquarium test kit will allow you to monitor key water parameters and ensure they are within the optimal range for your fish.

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You can’t go wrong with performing weekly 10-15% water changes that will physically remove excess waste and dilute toxins. Just because your fish will keep on eating after you’ve fed them the recommended amount of food, it doesn’t mean they’re always hungry. Of course, all these can be avoided with proper care and maintenance. After you complete the nitrogen cycle, you’ll still need to monitor toxin levels to see if there are any changes you should be aware of. The resulting number will tell you the total length of mature fish you can keep in the tank.

thoughts on “14 Types of Freshwater Turtles: The Best Aquarium Companions”

  • Different types of tanks require specific amounts of salt for optimal conditions.
  • They are also frequently sold in bright, interesting colors under the “Glofish” branding, and Zebra Danios also come in a long-finned variety.
  • Use the bucket with the siphoned water to give the filter a good rinse.
  • Whether you’re a beginner aquarist or a seasoned fishkeeper looking for some tips, read on to find out how to maintain a healthy and vibrant underwater world.

Be prepared to take at least a few weeks to ensure your tank is fully cycled before bringing your fish home. If you don’t have the time to skim through that article, my quick recommendation would always be to use Tetra SafeStart Plus. This brand contains the actual species of ammonia-consuming bacteria that thrive in water, unlike some other brands that use a less-efficient terrestrial strain.

Even if you’ve chosen hardy fish as your starter fish, you’re still going to expose them to toxins, which will eventually reflect in their health. It goes without saying that adding small fish to a tank with larger fish is also a no-no, since the bigger fish will mistake the smaller ones for food. So, you’ll need to perform water changes and clean the tank regularly to keep nitrate levels under control. If you add fish to a tank that hasn’t gone to a cycling process, ammonia levels will spike because of the waste fish generate.

These shoaling fish are easy to care for and can thrive in cooler water temperatures, which makes a heater not always necessary for their care. Betta fish are one of the most popular freshwater fish due to their low-maintenance nature and flowing, colorful fins. They have a labyrinth organ, which allows them to breathe surface air in low-oxygen environments. They have simple feeding requirements and will be happy in a tank with plants, a heater, and plenty of space to swim.

Being a cold-water fish, the White Cloud Mountain Minnows can comfortably carry on in an aquarium even if it has no water heater. Having floating plants in the tank will give even more confidence to the fish, which in turn makes their behavior super entertaining. The Lambchop Rasbora fish do not require very soft water, but they do come from a habitat that’s a little on the softer end. These aquarium kits are beginner-friendly and come with almost all the needed equipment to start (except a heater).

Welcome to Natalie’s Nook! I’m Sam Bramston, the heart and soul behind this blog where every word weaves a new part of our shared journey. With a rich background in professional blogging, I've transformed my passion for storytelling into a vibrant tapestry of articles that explore everything from quiet musings to grand adventures. Raised in the lush countryside, I developed a deep appreciation for nature’s whispers and echoes, which later inspired my themes of reflection and discovery. When I'm not crafting new content or buried in a good book, you can find me hiking local trails or experimenting with landscape photography, always with a camera in hand and a story in mind. Join me at Natalie’s Nook, where our stories intertwine and every shared moment becomes a cherished memory.