1. Featured

    Profile of a Reef Aquarist (#9): Reef2Reef Staff Member @HotRocks

    Today we're going to have a profile on another Reef2Reef staff member, @HotRocks.
  2. Featured

    What's Wrong With My Wrasse?

    An in-depth discussion of how to identify and treat different wrasse ailments written by a Reef2Reef staff member.
  3. Featured

    Neptune Apex Programming Tutorials, Part 3: Automatic Top-Off Kit (ATK)

    Part 3 of our series on learning how to program your Neptune Apex. Today's article is about the automatic top-off part.
  4. Featured

    Book Review--Tides: The Science and Spirit of the Ocean by Jonathan White

    A review of a book on everything about ocean tides including how they work and what they influence in the world around us.
  5. Featured

    Reef of the Month, June, 2019, @FarmerTy

    The June, 2019, Reef of the Month belongs to @FarmerTy.
  6. Featured

    Neptune Apex Programming Tutorials, Part 2: Timers

    Welcome to our Friday article on learning how to program your Neptune Apex. Today's article is all about timers: OSC, If Time, DOW, Defer, When, and Min Time.
  7. Featured

    Amazing Amphipods

    Here is a short introduction to amphipods, small crustaceans that are likely in your reef tank.
  8. Featured

    Decisions, Decisions, Decisions, Part 3

    Part 3 of the Decisions, Decisions, Decisions series of articles for beginners: thinking about what you want before you start spending money.
  9. Featured

    Neptune Apex Programming Tutorials Part 1

    This is the first article in a series about learning how to program your Neptune Apex Controller.
  10. Featured

    The Beauty of Filter Feeders, Part 2

    Part 2 and the conclusion of Asa Herring's article about non-photosynthetic coral that was previously published in Marine Fish Monthly.
  11. Featured

    The Beauty of Filter Feeders, Part 1

    An article about non-photosynthetic coral by an experienced aquarist that was previously published in Marine Fish Monthly.
  12. Featured

    Profile of a Reef Aquarist (#8): Reef2Reef Staff Member @4FordFamily

    For this profile we're talking to a Reef2Reef staff member who is very serious about his aquariums and livestock.
  13. Decisions, Decisions, Decisions, Part 2

    In the second part of this article, the author talks about money. How much does it cost to set up a reef tank? How can you save money and spend less?
  14. Featured


    A terrific and humorous DIY article on building a system for topping up your tank with fresh water.
  15. Decisions, Decisions, Decisions, Part 1

    This is Part 1 of a two-part article addressing some of the initial decision you are faced with if you want to start a reef tank. This part discusses the amount of time needed to devote to your tank when setting up.
  16. Featured

    GIVEAWAY: Win a Reef Kinetics ReefBot valued at over $900 shipped to your door!

    Reef Kinetics ReefBot Giveaway! We are super excited to announce that we're giving away a Reef Kinetics ReefBot to one lucky R2R member! The ReefBot is an automatic water testing device that monitors your aquarium, tank or pond by running tests periodically, analyzing them and sending you real-time updates via mobile or web app. Not only can you monitor your aquarium, you can even perform and set up preferred test schedules and let the ReefBot do the rest of the work for you remotely! HOW...
  17. Close Encounters of the Copepod Kind

    A look inside the world of copepods, tiny, aquatic creatures that are supremely well adapted to their environment.
  18. Checklist: Before You Start Your First Saltwater Aquarium

    One of our experienced forum members has written an article about what you need to think about before you start buying equipment for your first reef tank.
  19. Featured


    Reef keepers might not keep checking the temperature all the time, temperature to aquarium livings is just like air to human, you won’t pay attention until it goes wrong and makes damage. If you never have the experience of broken heater before, congratulation, but believe it or not, non device won’t be broken, just time matters, means your heater will get broken soon or later. Here's 3 ways to use multiple heaters to save your aquarium!
  20. Building a Large, Modular Calcium Reactor

    An interesting and detailed article on building your own large calcium reactor written by one of our very experienced forum members, @ca1ore.
  21. What's the Difference Between a Saltwater and a Freshwater Aquarium Aside From the Salt?

    For those who haven't taken the plunge yet, and who are wondering what the differences are between a saltwater and a freshwater tank, here's a short introduction.
  22. Featured

    The ROSSMONT Water Moving Giveaway! Win a Mover & Riser!

    Rossmont Water Moving Giveaway! HOW TO ENTER (3 Entries) 1. SUBSCRIBE to the Rossmont Youtube Page Here (one entry) 2. LIKE the Rossmont Facebook Page Here (one entry) 3. Write a post about why you like the Rossmont Mover or Rossmont Riser in this thread. (one entry) *Make a separate post in this thread after completing any of the entries. Each separate post is a separate entry. Winning entry is subject to verification. BONUS ENTRY FOR R2R SUPPORTING & PARTNER MEMBERS: This is an...
  23. What Equipment Do You Need to Start a Reef Aquarium?

    This article addresses the question that everyone new to the reef aquarium hobby asks: what equipment do I need to have a reef tank? It's a difficult question to answer, but we've given you some guidelines.
  24. Featured

    **** Aquaforest SALT FOR A YEAR GIVEAWAY!! ****

    WOW!! Here's an AMAZING giveaway sponsored by Aquaforest and Reef2Reef!! 1 lucky reefer will win a year's supply of Aquaforest Reef Salt (1 bucket of salt per month)!
  25. Reef of the Month, May, 2019, @reef jacob

    The May, 2019, Reef of the Month belongs to @reef jacob.
  26. Captivating Crustaceans: Crabs for the Reef Tank

    An introduction to crabs that you may or may not want in your reef tank.
  27. A Light Meter for Less Than $10

    A new article by Reef2Reef's resident lighting expert, Dana Riddle, on a budget-friendly light meter.
  28. Featured

    SPS and LPS Coral: Your Guide to Care and Feeding

    Some basic information on LPS and SPS coral requirements brought to you by Chaos Aquaculture.
  29. Featured

    A Hypocrites View on Not Using Quarantine

    A very personal and sincere discussion on quarantine by one of the Reef2Reef staff members.
  30. Profile of a Reef Aquarist (#7): A Pragmatic Approach to Reef Aquarium Uncertainty

    With a slow and steady hand, this reefer not only has several successful tanks up and running but he has also been president of his local aquatic club.
  31. The History of Tunze

    Tunze, an aquarium equipment manufacturer, and one of our sponsors, has a long and illustrious history with lots of "firsts" and patents. We've also added a little ancient aquarium history for good measure.
  32. Life on the Reef: True Stories From Reef Aquarists That Will Make You Laugh or Cry

    Some funny and some hair-raising stories from some of our forum members about memorable experiences with their tanks.
  33. Featured

    *** TOP 3 GIVEAWAY by Rocky Mountain Frags

    ROCKY MOUNTAIN FRAGS and REEF2REEF are bringing you the TOP 3 Giveaway!! We love corals, and we know that you do too! What are your favorite 3 corals of all time? The winner will receive a $200 gift card to Rocky Mountain Frags!
  34. Best in Shell: Snails for the Reef Aquarium

    Here's a rundown on the most common snails in the reef aquarium trade and others that might accidentally find their way into your aquarium: the recommended ones and the not-so-recommended ones.
  35. Featured

    What Makes a Bounce Mushroom Coral so Special?

    What’s Makes a Bounce Mushroom Coral so Special? They’ve bounced their way into the hearts of reef aquarium hobbyists and coral lovers all over the world. And who can blame the recipients and seekers of these beautiful additions? But what’s all the hype about? We’ll walk you through the underwater world of the bounce mushroom coral here so you understand exactly why you need one in your aquarium.
  36. Featured

    The William S. Tunze Macro Alage Reactor (MAR) Giveaway! BE ONE OF THE FIRST TO OWN!

    This month we're doing something special with the Tunze Giveaway. We have a special prize as we have one of the new Tunze Macro Algae Reactors (MAR) 3181 to give away so we needed a special way to get entered. THE WINNER WILL BE ONE OF THE FIRST TO OWN ONE OF THESE REACTORS!
  37. Plastic for the Reef Aquarium, Part 3

    Part 3 and the conclusion of Plastic for the Reef Aquarium.
  38. Plastic for the Reef Aquarium, Part 2

    In this part we begin to examine plastics more closely and look at why interpreting research studies is so challenging. What plastics research applies to reef aquarists and what doesn't?
  39. Plastic for the Reef Aquarium, Part 1

    This article is a companion article to the one written about glass several months ago--everything you always wanted to know about plastic and a few things you probably didn't want to know.
  40. Book Review--Fish Disease: Diagnosis and Treatment by Edward J Noga, M.S., D.V.M.

    A review of one of the few go-to textbooks on fish disease management.