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  1. How to Culture Microworms for Fish Fry Live foods are extremely useful when breeding fish because their enticing movements encourage the babies to eat and grow at a faster rate. However, some fish (such as betta fish, ram cichlids, and rainbowfish) produce miniscule offspring that are too small to eat traditional fry foods like live baby brine shrimp or crushed flakes. Instead, you can easily start a culture of micro, banana, or walter worms to keep the babies happy and healthy. What Are Microworms? A “micro worm” is a common name...
  2. How to Slow the Flow in Your Aquarium Previously, we discussed the importance of filtration for fish tanks because it cleans up debris particles, grows beneficial bacteria, and helps create water movement and surface agitation for improved oxygenation. However, is it possible your aquarium filter is overly powerful and produces current that is too strong for your fish? Some fish have long and flowy fins, are small in size, or originated from slow-moving waterways and aren’t built to handle torrents of water. Perpetually fighting ...
  3. 10 Best Goldfish Foods You Need to Try Goldfish have been bred for hundreds of years to have special features like elegant double tails and egg-shaped bodies. That compact physique can sometimes cause constipation and digestion issues, so goldfish owners devote a lot of time and energy into finding the best foods for their water piggies. After decades of personally keeping and raising goldfish, here are our top 10 foods we love to feed to ensure that our goldfish get a wide variety of essential nutrients, color-enhancing ingredien...
  4. How Many Fish Can I Put in a Fish Tank? One of the most common but hardest questions we get is “How many fish can I put in a 10-gallon tank? What about a 20-gallon tank? 55 gallons?” As you may guess, there is an infinite number of possible fish combinations for each aquarium size that we could recommend. To simplify things, let’s first understand the three factors that will most impact your fish stocking levels and then discuss our general guidelines for introducing the right number of fish to your aquarium. #1 Waste Load If you a...
  5. Care Guide for Platy Fish – Feeding, Breeding, and Tank Mates Looking for a colorful, hardy fish that’s easy to breed and looks great with live plants? Platies have always been one of our favorite livebearers to recommend to both beginners and veterans. Learn more about their care requirements when it comes to housing, tank mates, feeding, and of course breeding. What are Platy Fish? Platies are a popular livebearer in the freshwater aquarium hobby that are native to Mexico and Central America. The two species most commonly available in fish stores are ...
  6. What is Mulm or Detritus in Aquariums? Is there a brown or black substance that seems to collect like dust bunnies all over the floor of your fish tank? This dirt-like material goes by many names – such as mulm, detritus, and debris – and it’s a naturally occurring part of healthy aquariums. Keep reading as we dissect what mulm is made of, whether you should remove it, and how to minimize its appearance. What Is Mulm? Mulm starts off as fish poop, plant leaves, leftover fish food, and other organic materials that are decomposing i...
  7. How to Care for a Dwarf Aquarium Lily Wish you could put lily pads in your aquarium? Check out the dwarf aquarium lily or Nymphaea stellata. This beautiful, easy-to-grow species hails from India and Southeast Asia and is often used as a midground or background plant. Its bulb spouts a compact bush of 4-inch, arrow-shaped leaves and then eventually extends long stems of lily pads that float at the water surface. Compared to your typical green aquarium plant, the dwarf lily provides unique textures and interesting colors ranging fr...
  8. 5 Easy Plants for Goldfish Aquariums Goldfish are notorious for munching on or digging up aquatic plants, which is a shame because live plants are both beautiful and beneficial, capable of consuming the toxic chemicals produced by fish waste. Thankfully, we’ve found several plant species that are not only easy to care for but also hardy enough to stand up to your goldfish’s curious nibbling. 1. Crinum calamistratum This slow-growing bulb plant is known for its long, crinkly leaves that can grow up to 4 feet (1.2 m) long. Like g...
  9. How to Care for Hornwort in Aquariums and Ponds Hornwort is a popular aquatic plant for both fish tanks and outdoor ponds because of its fluffy-looking stems, extremely fast growth, and ability to consume excess nutrients from the water. Learn about the care requirements for hornwort and whether or not it’s the right plant for you. What is Hornwort? Ceratophyllum demersum is known by many common names, such as rigid hornwort, hornwart (a frequent misspelling), and coontail. It grows very tall in the wild and will easily reach all the way t...
  10. Why is My Cryptocoryne Plant Melting? You just planted your new cryptocoryne (or crypt) plant in the aquarium, and it looks perfect for the first few days. Then you notice that one or two leaves aren’t doing so well. Maybe they are turning yellow-brown, have large gaping holes, or are simply withering away. Soon the whole plant looks as bare as a maple tree in winter. This phenomenon is very common with cryptocorynes and is often called “crypt melt.” Crypts (and many other live aquatic plants) are very sensitive to major changes...
  11. How to Make Gel Fish Food in 7 Minutes Most fish foods fit into one of four categories: dry (e.g., flakes and wafers), freeze-dried, frozen, and live foods. However, gel food for aquarium fish is a unique addition to the hobby that is sold by companies like Repashy Ventures. It comes in a jar of powder that you mix with hot water and let solidify into a jello-like consistency. When dropped into a fish tank, the gel food quickly sinks to the bottom and is easy for both small and large fish to nibble on. Unlike many other fish foods...
  12. How to Use an Aquarium Air Pump (and Make It Quieter) Air pumps are commonly used with aquarium filters, decorations, and many other air-driven devices, but what exactly do they do and how do you know if your fish tank needs one? In this article, we explain when to use an air pump, how to pick the right one, and how to install it in your aquarium. What is a Fish Tank Air Pump? An air pump is a mechanical device that sits outside of the fish tank and uses electricity (either from a wall outlet or battery power) to pump air into the aquarium. The ...
  13. How to Clear Up a Cloudy Fish Tank Cloudy water can be very frustrating, since it prevents you from fully enjoying your beautiful fish tank. In this article, we explore the many reasons why your aquarium may look hazy and how to clear up the murkiness as quickly as possible. The first thing you need to do is pour some of the tank water into a plastic cup or bucket that is solid white on the inside. This will allow you to examine the color and cloudiness of the water more carefully without interference. 1. Particles in the Wate...
  14. Care Guide for Plecos – The Mighty Armored Catfish Are you looking for a suckerfish to keep your aquarium clean? Many people automatically turn to plecostomus catfish (or plecos), thinking that they’ll magically vacuum up all the fish poop and debris in the tank. Before you make the purchase, let’s talk about this amazing animal, their care requirements, and whether or not plecos are the right pet fish for you. What are Plecos? Plecostomus is the common name given to the Loricariidae family of armored suckermouth catfish that come from Centra...
  15. Top 10 Fish for a 10-Gallon Aquarium One of our most frequently asked questions is “What can I put in a 10-gallon aquarium?” When you’re surrounded by hundreds of freshwater fish at a fish store, the possibilities just seem endless! Whether you like livebearers, cichlids, or killifish, check out our top 10 list of both popular and uncommon fish to help you discover a new species that you just have to try. 1. Brown Pencilfish Let’s start off with a top-dwelling fish, which can be hard to find for a 10-gallon tank. Nannostomus equ...
  16. How to Make a Mini Outdoor Pond for Aquarium Fish When the weather warms up and summer is upon us, everyone is itching to go outside. What better way to enjoy nature than to set up your first mini pond for breeding aquarium fish? If you live in a temperate climate that experiences distinct seasonal changes, then your mini pond fun usually lasts for 3 to 4 months in the summer (e.g., sometime between May and September in the United States). However, if you live in the subtropical zone that stays above 50°F or 10°C for most of the year (like F...