Great Aquariums Start Here
Live Chat Support
    Free Shipping On $175+
  • FREE Shipping On $175+
  • 14-Day Low Price Guarantee
  • 14-Day Low Price Guarantee
  • Same Day Shipping
  • Same Day Shipping
FREE Shipping on Orders Over $175
FREE Shipping on
Orders Over $175
Standard ground shipping (1-7 business days) starts at a low $5.99 and most orders over $175 ship FREE. Learn More
14-Day Low Price Guarantee
If you find a product we sell for a lower price at another online store, we will match their price—today and up to 14 days after you've purchased the item! Learn More
Same Day Shipping
Same Day Shipping
We promise to ship your order as fast as humanly possible. In fact, 99% of orders placed before 6 pm EST ship the same day! Learn More

Fluorescent Aquarium Lighting

Power Compact Lighting
Fluorescent Aquarium Lighting

Fluorescent aquarium lighting is a popular and versatile choice for illuminating your fish tank. It can be used in both freshwater and saltwater applications.

Aquarium fluorescent lighting is the most popular choice for saltwater fish-only systems. High output fluorescent light fixtures, such as T5 lighting, are capable of sustaining higher light demanding SPS corals in reef aquarium systems with the proper reflectors, number of T5 bulbs and using a combination of proper spectrum T5 aquarium fluorescent bulbs. In fact, many successful reef aquariums rely solely on T5 HO fluorescent light fixtures. Compact Fluorescent lights (Power Compact or PC) are another popular style of fluorescent lights.

Aquarium fluorescent lights are commonly abbreviated or written as acronyms. A few to familiarize yourself with include NO (normal output), HO (high output fluorescent), VHO fluorescent (very high output) and V-HO (variable high output). T5 and T12 refer to the diameter of the fluorescent tube in 1/8 inch increments. T5 lights are ⅝ inches across; T12 lights are 12/8 (or 1.5 inches) across.

Read more in these articles, Lighting: What To Know Before You Buy and Replacing your Reef Tank Bulbs.

Still unsure? Let us help you find it.

1-800-566-FISH (3474)

We've recently changed this page. Want to shop our previous lighting page? Click Here.
Fluorescent Aquarium Lighting Videos
In this video, we demonstrate how to replace the bulbs in your T5, Metal Halide or Power Compact Fixture. You should replace your aquarium lights every 9-12 months, depending on usage. Changing out your bulbs during this timeframe is the best way to maintain a healthy aquarium. This step-by-step video shows you how easy it is to perform routine bulb replacement for freshwater, marine and reef aquariums.

Browse all Marine Depot videos...
Email Specials
Subscribe to our newsletter feed.
Newsletter Tips & Tricks! New Products!
Discounts & Promos!
Oct 14, 2014
"I have found that shopping at Marine Depot is always easy. They have a large selection of items in most every category. Their pricing is always the best with sales on most items."

Oct 13, 2014
"Excellent! Couldn't be easier to get the supplies I need. Thanks as always!"

Sep 28, 2014
"Always find what I'm looking for. Appreciate the selection of reasonably priced fish meds."

Marine Depot Newsletter Signup
Aquariums, News & Culture
Join 100,000+ readers who receive weekly tips, videos, deals and giveaways.