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Ask Reef Builders #2: Why do you believe pH is so important?

Welcome to ‘Ask Reef Builders’, a column where we’ll take some of your best questions and share our responses from which all our readers can learn. For years we’ve answered questions fielded…

Hanna Seawater Refractometer is the Ultimate Way to measure Salinity

I started keeping saltwater tanks in 1996 and since then have used many different tools and instruments to measure salinity. At first it was with floating glass hydrometers, and soon thereafter it was swing arm hydrometers. These two devices use the…

Friday Smorgasbord

Friday Smorgasbord: Ma kai edition

Happy Friday and welcome to another edition of our Friday Smorgasboard. We decided to share an all video version. This week we tried to balance the good with the bad and have a special treat at the end — so…

New CalcFeeder AC Mini from PacificSun

PacificSun really surprised us with their original CalcFeeder Pro which uses an optical sensor to automatically monitor dissolution rate, and now they’ve gone ahead and made an even smaller model. The CalcFeeder AC Mini is the newest model in their…

Free Sharks & Rays of Papua New Guinea eBook

Shark lovers, especially tropical shark species, will really appreciate a brand new free eBook on the Sharks & Rays of Papua New Guinea. Published by the PNG National Fisheries Authority and the Australian Government, this 300+ page digital document covers…

Life On Earth Would Suck Without Coral Reefs

If you’re reading Reef Builders on the regular, there’s a good chance that you wake up thinking about live corals, how to grow them better, make them more colorful, and the frags you’ll get or share with reefing friends. But…

Standout Acropora & SPS Corals of Palau

As a hobby that loves and appreciates live corals, all of which originate from wild coral reefs, I don’t think we are nearly in touch with what wild corals are really like. To bridge this gap we try and travel…

Tell the Hawaii Senate Water and Land Committee NO on SB2003

The Hawaii Ornamental Fish Collectors are under fire again, this time with the threat of near total shut down with a damaging bill called SB2003. Only you can make a difference to help stop this bill not with money, but…

What Is A Roasted Seahorse-on-a-Stick Worth?

Floating markets are a very popular tourist attraction in Thailand where tourists flock to shop many unusual items and especially ‘street’ food. However one vendor recently caused quite a commotion by selling roasted seahorses on a stick. Despite having virtually…