Two Easy Ways to Start Earning Rewards!
Earn 2X Pals Rewards points at Petco
when you use Petco Pay!
Learn how to set up a saltwater fish tank and key considerations regarding placement, supplies needed, and the overall set up process.
Updated on October 23rd, 2025
Learn how to care for large marine fish, recommended diet and habitat setup. Find the right food, supplies and equipment at your neighborhood Petco.
Updated on April 9th, 2026
Learn how to care for live rock & sand. Live rock serves as a platform for coral and invertebrates and provides a surface for beneficial bacteria to live.
Updated on October 23rd, 2025
Learn how to care for a tang fish, recommended diet and aquarium setup. Find the right food, supplies and equipment at your neighborhood Petco.
Updated on April 9th, 2026
Find out what tools you’ll need and discover the best way to get your aquarium back on track without starting over and find out how to maintain a clean fish tank.
Updated on June 12th, 2026
Salt water aquarium requires a great deal of regular maintenance to keep the fish alive. This can be helped by adding live rock (similar to live coral) to the aquarium. Below is a link to some great information for maintaining a salt water. aquarium.http://www.madhattersreef.com/20-ways-improve-aquarium-husbandry/ I hope that helps and all is well with your fish.
Updated on September 24th, 2025
Hi there! Thanks for using Petco Pet Education Center, formerly Petcoach! This is the same question I asked myself a few years ago when I started with my first saltwater aquarium. It really depends on a lot of factors. Consider that it requires a significant amount of time and money commitment if you want to do it the right way. It is really time consuming though extremely rewarding. Water quality and equilibrium of the tank are key and ensuring both requires using the right equipment and constantly testing the water and adjusting things as needed. I would consider reading a lot about it before commiting any money to it. I personally love it but it really is a second job I have every Saturday morning just to take care of my tank. Good luck!
Updated on September 24th, 2025
Thanks for reaching out about your fish. Things depend on the difference between the existing water and the future tank. The wider the range, the more stress. Match temperature also, as that provides the most stress. Good luck.
Updated on September 24th, 2025
Consider a broad spectrum treatment such as General Cure by API or Parasite Clear by Jungle Labs. Follow label directions. Plain aquarium salt (NOT table salt) can be used concurrently to aid in healing and to treat minor infection and fin rot. Dissolve up to one tablespoon per gallon of water into a cup of tank water and gently pour it into the tank. Test water chemistry using a home test kit or submitting a water sample. Most pet or fish stores will do this for free or for a nominal fee. Correct any imbalances using aged or conditioned water that is temperature matched to prevent further stress or shock. Use a conditioner such as StressCoat as well. Confirm adequate filtration to maintain water quality.
Updated on September 24th, 2025
All these fish can grow quite large. The loach would be the "smallest" at about 6 to 8 inches when full grown. The Oscars can reach lengths of 18 inches and the Texas cichlid and sharks can reach a foot in length. All these fish will require much larger tanks than the ones you have now. The three Oscars alone would do best in a 125 gallon aquarium MINIMUM. The others may thrive in 55 to 75 gallon tanks. To leave them in small tanks will cause stress, aggression and likely infection.
Updated on September 24th, 2025