EcoBio-Block Fish

Marine Aquarium Clean Up Crew: Complete Guide

Visit Petco to learn about cleanup crews and how they can help your aquarium health.

Updated on June 19th, 2026

Aquatic Pet Safety: Keep Your Home Aquarium Pets Healthy & Safe

Learn how to safely handle your aquatic life to avoid toxin & bacterial exposure. Find aquatic life care supplies at your neighborhood Petco pet care center.

Updated on October 23rd, 2025

To Go Bucket: Aquatic Life and Cricket Guide

Updated on March 4th, 2026

Aquatic Pet Owners: Stop Invasive Species, Save Our Waterways

Read about Habitattitude and Petco's commitment to protect our environment. At Petco, animals always come first. Learn how you can help.

Updated on October 23rd, 2025

CO2 for Fish Aquariums: What Every Pet Parent Should Know

Wondering why you may need CO2 in your fish aquarium? Learn the basics from a Petco aquatics specialist.

Updated on July 17th, 2026

What are the best medicines for fish parasites, bacteria, or fungus?

Pimafix is an acceptable "natural" antifungal treatment. Melafix is for bacterial infections. Kanamycin, erythromycin or metronidazole are good broad spectrum antibiotics. Fungus Cure (by API) is an excellent antifungal. You can find these medications in the aquarium section of most pet stores or even online. Follow label directions carefully and remove the carbon filter insert during treatment if indicated. The cornerstone of any treatment is to first maintain pristine water quality and stable chemistry.

Updated on September 24th, 2025

Why isn't my fish tank cycling after a month with a booster?

Unless you submit a water sample for culture or microscopic exam, you won't be able to determine if there are beneficial bacteria. With ammonia at the current level, there are bacterial populations. It takes time and patience to cycle a tank, sometimes up to 6-8 weeks. I'm not a fan of the "boosters", since you don't know how long they have been on the shelf or if the biologics are even active. Sprinkle some flake food in the tank and allow nature to run its course. The bacteria will feed off the flakes and populate the tank. Perform a 10-15% water change using conditioned water as needed during cycling.

Updated on September 24th, 2025

Does Petco sell Mr. Ros marine phytoplankton EPA for dogs and cats?

The experts here on the forum at PetCoach do not work at Petco stores and I don't think anyone would have knowledge of inventory at local stores. I cannot find this particular product on the Petco website. It's possible that it's available at your local store and you could try giving them a call. There are a number of other fatty acid supplements listed on the Petco website that may or may not be available in your local store: https://www.petco.com/shop/SearchDisplay?searchTermScope=&searchType=12&filterTerm=&maxPrice=&top_category=&showResultsPage=true&langId=-1&beginIndex=0&advancedSearch=&sType=SimpleSearch&metaData=%5BLjava.lang.String%3B%4065f965f9&pageSize=24&manufacturer=&resultCatEntryType=2&catalogId=10051&pageView=grid&searchTerm=fatty+acid&minPrice=&urlLangId=-1&categoryId=10056&storeId=10151

Updated on September 24th, 2025

What plants, substrate, and fish meds are safe for my planted tank?

Java Moss, Java Fern, Anubias and Amazon Swords are among the easiest live plants to care for and cultivate in an aquarium. You can use aquarium soil or aquarium sand depending on the species of plant(s) chosen. When medicating fish, it is best to remove them to a hospital or quarantine tank. This will spare live plants as well as beneficial bacterial populations, especially if an antibiotic is used. Medicated food is also an option.

Updated on September 24th, 2025

Why are my fish dying with pink and green algae in their tank?

Check the water chemistry using a home test kit or submit a water sample for testing. The local Petco may do this for free or for a small fee. Aim for an absence (0 ppm) of ammonia and nitrites with nitrates at 20ppm or less. Perform partial water changes to stabilize chemistry and/or to improve water quality. Rinse the filter media in tank water, not tap water, and replace it. Use only conditioned water that is temperature matched to prevent stress or shock. To limit algae growth, maintain pristine water quality via filtration and regular water changes. If possible, turn up filter flow to keep water moving. If this stresses the fish though, do not do it. Do not overfeed and remove any uneaten food promptly. Limit lighting to 8 hours daily and closely monitor water temperature as well. All these can promote algae overgrowth.

Updated on September 24th, 2025