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Related Articles & Questions
- Care Sheets
GloFish Care Guide: Tank, Food, & Compatibility for Thriving Fish
GloFish are brilliantly colored and beautiful fish. Learn how to care for GloFish, what to feed them, how long they live, their ideal tank size and more.
Updated on March 12th, 2026
Care SheetsMaster Aquatic Plant Care: Lush Aquarium Plants & Happy Fish
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- Care Sheets
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- Care Sheets
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- Health & Wellbeing
How do I get pet food and supplies delivered automatically by Petco?
**How does Repeat Delivery work?** ---------------------------------- - Get your everyday pet essentials delivered right to your door at the guaranteed lowest online price, you can save up to 20% off and free shipping on every qualifying order! - Repeat Delivery lets you schedule your favorite pet food and supplies for automatic delivery. No more last minute trips to the store - Repeat Delivery will ship your pet essentials right to your door. - All the products your pet needs on a regular basis are available. Choose from food, pest control, medications, vitamins, supplements and much more for all pet types. **What types of products are available?** ----------------------------------------- - **Dogs:** A variety of dry and canned dog food formulas, treats, pest control, vitamins and supplements, medications, waste pickup bags, select toys - **Cats:** A variety of dry and canned cat food formulas, treats, litter, litter box liners, litter odor control, catnip, pest contr
Updated on November 25th, 2025
- Food & Nutrition
My new Glofish are hiding and staying at the bottom. Is this normal?
Thanks for your question about your fish, and congratulations on your new family members! I didn't see how recently the tank was set up, but there are a couple of things that could be going on. I would start by checking your water quality - any abnormalities in water quality can make fish have abnormal behaviors, and the water looks a bit murky in the photos you provided. There may be parameters that need to be addressed depending on what you find. If you do not have a water quality kit, they can be purchased at the pet store or an aquarium store, or you can take a sample of your water in for evaluation to these places as well. Some will charge a small fee for this service, just so you are prepared. Also, with recent tank set ups, it can be stressful for fish as they are in a new habitat. I would recommend keeping the light on for only a few hours per day to start, as the bright lights can be shocking for them (since fish don't have eyelids). Gradually you can increase the length of t
Updated on November 25th, 2025
- Health & Wellbeing
How to choose the best tank size and setup for my two GloFish?
At the very least, a 10 gallon tank with a filter, heater, hood and light. Ideally, the tank should be up and running (without fish) until it cycles properly. This means there needs to be sufficient time for beneficial bacteria to colonize the tank and filter to be able to break down wastes, namely ammonia and nitrites and to a lesser degree, nitrates. This can take several weeks to occur. You can cycle a tank with fish in it, but it will require daily testing of water chemistry to prevent a toxic build up of ammonia and/or nitrites. Either can kill your fish if not treated. Follow this link for a FAQ regarding Glo Fish: https://www.glofish.com/about/faq/ Follow this link for more about cycling a tank: http://www.firsttankguide.net/cycle.php
Updated on November 25th, 2025
- Health & Wellbeing
What fish tank sizes are included in Petco's $1 per Gallon Sale?
##### What are the dimensions of tanks in the $1 per Gallon Sale? [Here](https://www.petcoach.co/question/?id=411222) are the answers to some of our most frequently asked questions: - What are the dimensions of my new tank? - What kind of hood will fit my new tank? - What kinds of stands will work with my new tank? - What kind of lighting is recommended for my new tank? **Aqueon10G**, **Marineland10G** - Product Dimensions: 20 x10 x12 - Compatible HOODS: Aqueon 20" Deluxe Full Hood - Compatible STANDS: the Brooklyn 10G, Aquatic Fundamentals Silver Vein Scroll 21x11 - Compatible LIGHTING: Aqueon 20" Deluxe Full Hood **Aqueon20 High**, **Marineland20 High** - Product Dimensions: 24x12 x16 - Compatible HOODS: AGA 24"BK VERSATOP GLASS - Compatible STANDS: Newport 20G - Compatible LIGHTING: Aqueon 24" fluorescent strip light or 24" LED light fixture (online only), Fluval Ultra Bright LED Aquarium Strip Light (online only) **Aqueon20 Long**, **Marinela
Updated on November 25th, 2025
- Health & Wellbeing
Why are my GloFish fighting? What causes aggression and how to stop it?
GloFish are schooling fish. They do best in groups of 6 or more. If you have just a few, they may be stressed which can cause aggression. Check the water parameters since an imbalance in chemistry can cause stress as well. You can use a home test kit (one with liquid drops, not test strips) or submit a sample to you local pet store or aquarist. Most will perform water testing for free or for a nominal fee. Ideal parameters measure 0 ppm (parts per million) ammonia and nitrites with nitrates at 40ppm or less. pH of the water should be between 6 and 8. They are cool water fish, so aim for a water temp between 65 F and 75 F. Hopefully, this will help. The other option you have is to remove the aggressor. You can request a consultation to discuss the situation and set up in greater detail or if you have further questions or concerns.
Updated on November 25th, 2025
