Often scuba divers focus on tiny critters, schools of fish, or jumbo-sized creatures like whales, dolphins, and sharks. This leaves corals to get lumped together under a single term ‘coral reef’ which is far too general to describe the hundreds of individual…
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How To Program Your LED Lights For A Reef Tank
Back when we were just using T5s or metal halides, the ‘programming’ was only concerned with how long to run the lights of a given intensity. But now that we’ve got access to multiple channels of light, in various colors, it can…
Bangka Island Has A New Dive Site, And You’re Gonna Love It!
Tanjung Merah Earlier this month we had the chance to dive around Bangka Island with Sulawesi dive guru Danny Charlton, and he made sure to pick out the cream of the crop for our exploration dives. What really keeps me excited…
What Temperature Is Too Hot For A Reef Aquarium?
Since we’re in the middle of the summer, it’s no surprise that temperatures are rising for everyone in the northern hemisphere, and the tanks that live there. It’s about this time of year that we get a lot of questions…
Focustronic Wants To Change The Way We Think About Lighting
Over the years the aquarium hobby has seen a number of drastic changes in ideology. Wet/dry filters transformed how we think about biological filtration, protein skimmers changed how we think about bioballs as nitrate factories, while gyre flow and propeller pumps…
21 Outstanding Images From The 2016 Ocean Art Photo Competition
2016 Ocean Art Photo Competition The winning images from the 6th Annual Ocean Art Underwater Photo Contest are now online. These images represent some of the best underwater photography of the year, and we highly recommend bookmarking the Ocean Art…
Top 10 Reef Divers Stories From 2016
Top 10 Stories of 2016 2016 has been a fantastic year for us, we started Reef Divers in March 2016 to share our passion for scuba diving and the marine environment with the world. Thank you to all our supporters,…
What is a Coral?
This may be very obvious to people in the reefing community, but people who have stepped into their first fish store may wonder “Is it a plant?”, “What are they made of?”, or “Are they alive?”. Corals are indeed living…
Some Subtle Signs that a Fish is Sick
Most marine aquarium hobbyists learn quickly to identify common warning signs of ill health in fish—white spots, excessive mucus production, bulging eyes, frayed fins, etc. But sometimes ailing fish exhibit much more subtle symptoms that are evident only to someone…
Stunning new species of Trimma dwarf gobies described from Papua New Guinea
There’s a fresh new crop of newly described species of Trimma dwarf gobies from Papua New Guinea and several of them are quite the lookers. The four new species described by Gerald Allen include Trimma abyssum, T. nauagium, T. chledophilum and T. multiclitellum. As you…
