Two Easy Ways to Start Earning Rewards!
Earn 2X Pals Rewards points at Petco
when you use Petco Pay!
Discover how to hardscape your aquarium here at Petco. Visit Petco and check out aquarium hardscape ideas, solutions and much more for your fish.
Updated on November 13th, 2025
Discover the fish tank filter system that’s right for your aquarium. Learn about mechanical, chemical, and biological filtration at Petco.
Updated on November 13th, 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 November 13th, 2025
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 November 13th, 2025
Some fish species generally do well in smaller aquariums, are more adapted to aquarium life, & can be slightly more forgiving with water quality fluctuations.
Updated on November 13th, 2025
A fish tank will need a filter, a light/hood and a heater. Make sure the filter is rated for at least twice the tank volume. The heater should be adjustable since water temperature will depend on the species of fish. Good "starter" fish include Tetras, Mollies, Danios or Tetras. A new tank should be set up and left running empty for several weeks before adding fish. A pinch of flake food can be sprinkled in daily. This "cycling" will allow a population of beneficial bacteria to colonize the tank and filter. These bacteria will break down wastes (ammonia, nitrites and nitrates) which are toxic to fish.
Updated on August 12th, 2025
Gerbils come from a desert environment, but sand as a substrate is not practical and difficult to keep clean. Instead, you can use aspen shavings, hay or recycled paper bedding. Make it deep enough so they can tunnel through it and make little nests.
Updated on August 12th, 2025
It may be the pH change or other change in water chemistry. Use a home test kit to check water quality. Make adjustments as indicated. It may also be a response to a temperature change. Check water temperature and increase the heat if necessary, just don't forget to turn it down or off once the temp is within range.
Updated on August 12th, 2025
Thanks for reaching out about Corn and including photos. This could be mineral deposits but is difficult to tell in the photos. Mold usually does not grow below the water level as needs oxygen. Clean the filter well. A sample of the material can be acquired and a veterinarian might be able to help by examining under the microscope. Good luck.
Updated on August 12th, 2025
I would recommend to have the water completely changed. New water should be ideally submitted for quality testing. Most pet stores will do this for free or a nominal fee. High ammonia levels, PH imbalances may be responsible for that as well. Oxygen concentration and quality of the filters should be determined as well. Please do not hesitate to contact us again on the forum or by requesting a consultation if you have any more questions or to discuss it any further.
Updated on August 12th, 2025