Zoo Med T-5 & T-8 Aquarium Fluorescent Bulbs | Petco

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Home & Habitat
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
Product Guides
Aquarium Heating: Heater Types, Wattage & Setup Tips
There's a wide array of heating solutions to provide the optimal temperature for your aquatic friends to thrive. Dive in to navigate options & ideal wattage.
Updated on July 17th, 2026
Care Sheets
Complete Tetra Care: Tank Setup, Food, & Compatibility Tips
Learn how to care for a Tetra, recommended diet & habitat setup. Find the right food, supplies & equipment at your neighborhood Petco.
Updated on April 9th, 2026
Care Sheets
Aquarium Water Quality: Master Healthy Fish & Crystal Clear Tanks
Learn how to test your aquarium water. Poor water quality stresses fish, which leaves them susceptible to disease and possibly death.
Updated on October 23rd, 2025
Care Sheets
Freshwater Semi-Aggressive Fish: Top Secrets for a Thriving Tank
Learn how to care for semi-aggressive fish, recommended diet & aquarium setup. Find the right food, supplies & equipment at your neighborhood Petco.
Updated on April 9th, 2026
Vet Q & A
20-gallon tank setup: What fish and supplies do I need to get started?
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 September 24th, 2025
Vet Q & A
Is plant fertilizer safe for fish? What do I need for a planted tank?
When used as instructed, plant nutrients and fertilizers designed specifically for aquarium plants will not harm aquarium fish. Allow new aquarium plants to settle and establish themselves before adding any fertilizers. Use aquarium plant substrates such as CaribSea Eco-Complete Plant Substrate http://www.drsfostersmith.com/product/prod_display.cfm?pcatid=9087 to get your plants established faster. Seachem Flourish Advance Natural Phytohormone Supplement http://www.drsfostersmith.com/product/prod_display.cfm?pcatid=33890 will help stimulate root growth vital for overall plants health. Even though you have plants with low to moderate light requirements, be sure to use aquarium light specifically designed for planted aquarium use (sometimes called plant lights) and have the lights on between 10 and 12 hours a day. You may need to adjust the photoperiod (the amount of time the light is on) depending on how your plants are doing and to prevent unwanted nuisance algae growth.
Updated on September 24th, 2025
Vet Q & A
What is full spectrum lighting for birds and why do canaries need it?
Full-spectrum light is light that includes all wavelengths that are useful to plant and animal life. It is beneficial to birds in that it mimicks their natural lighting in the wild. The link below leads to a short article about the benefits of full spectrum lighting. You can purchase full spectrum bulbs online or in most hardware or home improvement stores. http://www.featherbrite.com/beoffuspli.html
Updated on September 24th, 2025
Health & Wellness
Should I get a UVB light for my indoor rabbit to get enough vitamin D?
Thanks for reaching out about Tofu. Yes, you can provide UV light for your rabbit through the use of a reptile UVB light. This is a common way for rabbits to get UVB light. Sunlight is the most effective way to provide UVB light, but if you are unable to get Tofu outside, artificial light is a good alternative. UVB bulbs must be changed every 4-6 months, whether the bulb burns out or not. When choosing a UVB bulb, you want to have some information available. First will be how you are going to suspend it over her - you will need to ensure that she is unable to contact the bulb directly as she could get burned, and that the bulb is at least 8-10 inches away from her so she doesn't get burned as well. Once you know how you will suspend the light, then you will measure the distance from the light to her level - ideally this would be no more than 18-24 inches away. Most UVB bulbs can't penetrate a distance that is further away than this. Once you have the distance measured, then you can go to a pet store and ask them for UVB bulbs that will be appropriate for the distance that you have. Ideally Tofu would have 15-20 minutes of exposure to UVB light per day - if you provide her with longer exposure, that is okay as well. I hope this helps to answer your question, and thanks for using Petco Pet Education Center, formerly Petcoach.
Updated on September 24th, 2025
Health & Wellness
Can I use tetracycline or doxycycline to treat my fish's ulcer?
Either may work to treat ulcers which are caused by bacterial infection. Pristine water quality is just as important, if not more so, than medication. Elevated ammonia or nitrite levels can be stressful as well as toxic. A stressed fish is more likely to become ill. Use a home test kit or submit a water sample for testing. Aim for 0 ppm ammonia and nitrites, with nitrates at 20 ppm or less. If your fish are salt tolerant, you can use aquarium salt (NOT table or Epsom salt) in conjunction with an antibiotic. Dissolve 1 teaspoon of salt per gallon of water in a cup or two of tank water and gently pour it in. This will improve gill function, reduce stress, treat minor infection and aid in recovery. Treat for no more than 14 days then perform a partial water change to decrease salinity. Use only conditioned water that is temperature matched to prevent stress or shock.
Updated on September 24th, 2025