Aquarium Co-Op

How many fish can I put in a 75-gallon tank? One of the most common but hardest questions we get is “How many fish can you put in a 3-gallon aquarium? What about a 20-gallon tank? 55 gallons?” As you may guess, there is an infinite number of possible fish combinations for each tank size that we could recommend. To simplify things, read this article that discusses the three factors that will most impact your fish stocking levels, as well as our general guidelines for introducing the right number of fish to your aquarium.

How many fish can I put in a 29-gallon tank? One of the most common but hardest questions we get is “How many fish can you put in a 29-gallon aquarium? What about a 20-gallon tank? 55 gallons?” As you may guess, there is an infinite number of possible fish combinations for each tank size that we could recommend. To simplify things, read this article that discusses the three factors that will most impact your fish stocking levels, as well as our general guidelines for introducing the right number of fish to your aquarium.

How many fish can I put in a 30-gallon tank? One of the most common but hardest questions we get is “How many fish can you put in a 30-gallon aquarium? What about a 20-gallon tank? 55 gallons?” As you may guess, there is an infinite number of possible fish combinations for each tank size that we could recommend. To simplify things, read this article that discusses the three factors that will most impact your fish stocking levels, as well as our general guidelines for introducing the right number of fish to your aquarium.

How many fish can I put in a 40-gallon tank? One of the most common but hardest questions we get is “How many fish can you put in a 40-gallon aquarium? What about a 20-gallon tank? 55 gallons?” As you may guess, there is an infinite number of possible fish combinations for each tank size that we could recommend. To simplify things, read this article that discusses the three factors that will most impact your fish stocking levels, as well as our general guidelines for introducing the right number of fish to your aquarium.

How many fish can I put in a 55-gallon tank? One of the most common but hardest questions we get is “How many fish can you put in a 55-gallon aquarium? What about a 20-gallon tank? 10 gallons?” As you may guess, there is an infinite number of possible fish combinations for each tank size that we could recommend. To simplify things, read this article that discusses the three factors that will most impact your fish stocking levels, as well as our general guidelines for introducing the right number of fish to your aquarium.

How many fish can I put in a 5-gallon tank? One of the most common but hardest questions we get is “How many fish can you put in a 5-gallon aquarium? What about a 20-gallon tank? 55 gallons?” As you may guess, there is an infinite number of possible fish combinations for each tank size that we could recommend. To simplify things, read this article that discusses the three factors that will most impact your fish stocking levels, as well as our general guidelines for introducing the right number of fish to your aquarium.

How many fish can I put in a 3-gallon tank? One of the most common but hardest questions we get is “How many fish can you put in a 3-gallon aquarium? What about a 20-gallon tank? 55 gallons?” As you may guess, there is an infinite number of possible fish combinations for each tank size that we could recommend. To simplify things, read this article that discusses the three factors that will most impact your fish stocking levels, as well as our general guidelines for introducing the right number of fish to your aquarium.

How do I get rid of blue-green algae or cyanobacteria? Blue green algae (BGA) is a turquoise slime that can cover your aquarium gravel, decorations, and plants. It's actually a cyanobacteria and therefore does not always respond to traditional algae-fighting techniques. It is very susceptible to antibiotics that contain erythromycin, like Fritz Slime Out. To begin treatment, scrub off as much of the blue-green algae as possible and remove it with a siphon. After vacuuming the substrate and refilling the tank, add one full dose of Slime Out (w...

What fish can live in a 10 gallon tank? We often get asked "What can I put in a 10 gallon tank?," which is about as easy to answer as "What food can I get for under $10?" Fish stocking choices depend on your personal preference and what kind of animals appeal most to you. To help inspire you, here are several articles with our favorite ideas: Top 10 Fish for a 10-Gallon Aquarium 7 Best Fish Tank Ideas for a 10-Gallon Aquarium Top 7 Colorful Fish for a 10-Gallon Aquarium Top 5 Oddball Fish for a 10-Gallon Aquarium C...

How do I cancel my order? Our packing and shipping crew works extremely fast, so once you submit an order, you only have a very short window during warehouse hours to attempt to cancel the purchase. Try contacting our customer service team using our contact form or by emailing shipping@aquariumcoop.com. However, once the order has been packaged, there is no way for us to cancel the order at that point. The good news is that orders submitted after 4 p.m. PST usually won't be packed until the following day, so you h...

How many fish can I put in a 20-gallon tank? One of the most common but hardest questions we get is “How many fish can you put in a 20-gallon aquarium?” As you may guess, there is an infinite number of possible fish combinations for each tank size that we could recommend. To simplify things, read this article that discusses the three factors that will most impact your fish stocking levels, as well as our general guidelines for introducing the right number of fish to your aquarium.

How many fish can I put in a 10-gallon tank? One of the most common but hardest questions we get is “How many fish can you put in a 10-gallon tank?” As you may guess, there is an infinite number of possible fish combinations for each aquarium size that we could recommend. To simplify things, read this article that discusses the three factors that will most impact your fish stocking levels, as well as our general guidelines for introducing the right number of fish to your aquarium.

Which aquarium air pump should I get? You can see our full lineup of air pump equipment and accessories, but after testing dozens and dozens of air pumps over the years, we have settled on three units that have superior reliability, low noise level, and reasonable cost. Each pump is best suited for different types of applications, so choose the right one that fits your needs: Recommended Air Pump for Small to Large Tanks Aquarium Co-Op air pump Our favorite air pump is the Aquarium Co-Op air pump because of the included battery ...

How do I convert my established fish tank into a planted aquarium? If your fish tank has already been running for a while, it should be fairly easy to transition to a planted aquarium. Change the lighting to a planted tank LED light if needed. For example, if you have an aquarium hood and want to upgrade the light, you may need to replace the hood with a glass top so that you can use a planted aquarium light instead. See our LED Aquarium Lighting Guide for our recommended lights based on your tank size. Change the substrate if desired. Most beginner plant...

What are UV sterilizers in aquariums used for? UV sterilizers slowly pass aquarium water pass an ultraviolet (UV) bulb, which irradiates microorganisms like bacteria, algae, and protozoa. By damaging their DNA, it can shorten their life cycle and limit population growth. UV sterilizers do not seem to affect beneficial bacteria as much since that type of bacteria is mostly found growing in filters and on surfaces, rather that freely floating in the water column. We like to use our UV sterilizers when dealing with green water. Green water i...

How do I add products to my order or combine my orders? Our packing and shipping crew works extremely fast, so once you submit an order, you only have a very short window during warehouse hours to attempt to add a last-minute product. Try contacting our customer service team using our contact form or by emailing shipping@aquariumcoop.com. However, once the order has been packaged, there is no way for us to edit the order at that point and you'll have to submit a new order instead. The good news is that orders submitted after 4 p.m. PST usually...