March 12, 2025

A Complete Guide to Freshwater Fish Tanks: Selection, Setup, and Maintenance

How to Maintain a Freshwater Aquarium

Engaging with an aquarium community can provide support and friendship. You can share tips, ask questions, and learn from others who enjoy this hobby. When problems arise, having a group to turn to can help you troubleshoot and care for your fish effectively. To keep your aquatic life thriving, make sure you perform regular water changes, typically 25-30% every few weeks, and maintain the right water chemistry. Every one or two weeks, you should clean your fish tank and replace no more than 25% of your tank’s water. Use your gravel siphon to get down into the crevices of your substrate to remove excess waste and other debris.

Rookie Mistakes to Avoid When Starting an Aquarium

They are a good match for other peaceful types of fish that enjoy lingering in different parts of the tank. True to their name, the neon rainbow fish dazzles with its iridescent scales, particularly when they swim against well-planted tanks. Because of their timid nature, we recommend keeping these fish in groups of at least 6 individuals. These cute Catfish only reach around 2.5 inches in length and prefer to be kept in groups. They will be happy with a partner but will become most active in larger groups. These tiny shoaling fish are one of the most recognizable in the aquatics trade.

How Much Salt Should I Put in My Aquarium to Keep Fish Healthy and Happy

  • The only time they become aggressive is if there is more than one male swordfish in the tank.
  • The aquarium filter helps remove decaying matter, excess food, fish waste, suspended particles, etc. preventing cloudiness and the accumulation of toxins in the tank.
  • To prevent diseases, keep the tank clean and manage stress factors like overcrowding.
  • The Java Fern and the Java Moss need nothing more than basic care and can be used to create dense aquatic vegetation in a fish tank.

An aquarium that’s safe for fish will read 0 ppm (parts per million) of ammonia, 0 ppm nitrite, and around 10 ppm of nitrate. Therefore, it’s not recommended to keep fish in an aquarium without a running filter for more than a week and that’s pushing it. Generally, the fish for an aquarium of this size should not be an over-breeder or a fast-grower. A 5-gallon bowl with some live plants would make a good habitat for a single male Betta. Such small volumes of water get polluted by organic waste very quickly and sudden ammonia spikes, deadly for aquatic inhabitants, are often observed. Betta fish, which has a unique organ called the Labyrinth, is one kind of fish that can survive such low-oxygen environments.

Read each description carefully, and be honest about your experience level so you don’t get overwhelmed by a complex turtle species like the Chinese Softshell Turtle as a beginner. First-time aquarists should consider easy options like Red-Eared Slider, Stripe-Neck Musk, and Reeves’ Turtles. Earlier, I highlighted the beauty of colorful aquatic turtles, so let’s shine a light on another sub-variant, the Southern Painted Turtle.

Easy to care for and with a unique appearance, the bristlenose plecostomus is a fun addition to any aquarium. You can use marine salt for saltwater tanks, freshwater salt for freshwater systems, kosher salt in emergencies, and Epsom salt for stress relief or specific diseases. Each type serves different purposes, so choose based on your aquarium’s needs.

These are the least expensive option and work very well for smaller tanks. There are several pieces that all come together when you are trying to select your first aquarium setup. You should also consider how much time you have to devote to the upkeep and cleaning of your tank.

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.