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ReefBase Reef Quiz

Play the ReefBase Reefing Quiz!

20 Questions from easy to not-so-easy. Have fun & good luck!

Example Question: Meerwasser is german for


ReefBase is a Marine Fish keeping & Coral Reef Aquarist Community Forum based in the UK. Join ReefBase for help & advice or to contribute your own knowledge & experience of keeping a Marine Coral Reef Aquarium.

Create an account (It's quick & easy)



If you're new to ReefBase, come and introduce yourself.

Last post by HK_Fuey
in Re: returning fish keeper

ReefBase Lounge

General off-topic chat and discussions. Be yourself & join-in.

Last post by Asco1104
in Re: Chasing corals


A general board for the discussion of freshwater fish, tanks and freshwater specific equipment, such as CO2 kits, etc.

Last post by parkerthomas
in Re: Interesting fish suggestions for a nano

Members Tanks

Browse our members' tank threads, view progress and pictures, or create your own thread to track the progress of your own reef aquarium.

Last post by Jamthemackem
in Re: My new tank

Tank of the month

Monthly competitions on member's tanks. Enter pictures of your tank and / or vote on others'.

Last post by Marty
in Re: TOTM September 2016 - voting

General Reef Keeping

General Reef Discussions

General non-specialised reefkeeping questions & discussions.

Last post by Mike
in Re: Aquarium Systems Seatest

Beginners Questions

If you're new to the hobby, please ask any questions you have, rather than making the mistakes we've all made.

Last post by Dean69
in Re: Zoa spiders


All reef chemistry related posts should go in here.

Last post by chilliman
in Re: is it possible

Reefing News

Post links or information on any related reefing news.

Last post by fr499y
in Re: Killer amphipods attack!!!

Stunning Reef Tanks

A collection of the most beautiful reef aquariums from anywhere on the net. Post links and a brief summary of what captivated you most by the tank. Inspiration for us all.

Last post by HK_Fuey
in Re: David Saxby reef


General competitions on member chosen subjects.

Last post by HK_Fuey
in Xmas photoshop challenge


Reefbase ID database

A database of common living things found in our reef tanks

Last post by Gav
in [BAD] Teddy Bear Crab

ID needed

Need help identifying something? Post a photo, video, and/or description and we'll do our best to help you out.

Last post by Asco1104
in Re: Hitch-hiker Crab ID please

Marine Fish

General Marine Fish

A general board for all Marine fish, for Marine Fish identification, and general discussion.

Last post by Asco1104
in Re: Sand

Marine Fish Diseases

A board for threads related to marine fish diseases including; White Spot (Ich), Brooklynellosis (Anemonefish Disease), Marine velvet, black spot, HLLE, Fin Rot, etc. Their diagnosis and treatment.

Last post by HK_Fuey
in Re: Valentini Puffer

Clownfish & Damselfish

Clownfish and other Damselfish, including Clarkii Clownfish, Common Clownfish (Nemo), Skunk Clownfish, Electric Blue Damselfish, Domino Damselfish are in this category.

Last post by HK_Fuey
in Re: Clownfish set up help needed

Tangs / Surgeonfish

Discussions regarding Tangs aka Surgeonfish. Fish such as Yellow Tangs, Regal Tangs (Dory), Naso Tangs, Clown Tangs, etc fall into this category.

Last post by fishface
in Re: Adding yellow tangs

Angelfish (Large & Dwarf)

For topics about Angelfish & Dwarf Angelfish. For Fish such as the Queen Angelfish, Emperor Angelfish, Coral Beauty & Flame Angel.

Last post by Marty
in Re: Emporer anglefish


General Corals

A general board for all Corals & Anemones, for Coral identification, and general discussion.

Last post by ajm83
in Re: Removing invasive palys

Soft Corals

Soft corals. Corals without a skeleton. These include Leather Corals, Pulsing Xenia, Zoanthids, Mushrooms, etc.

Last post by Gav
in Re: Zoas disappearing

LPS Corals

Large polyp stony corals. Any corals with a calcium based skeleton, and large polyps which extend out to completely conceal the skeleton beneath.

Last post by ajm83
in Re: Can i trim LPS?

SPS Corals

Small polyp stony corals. More advanced corals which have calcium based skeletons and small polyps.

Last post by fr499y
in Re: Birdsnest,very easy to keep and frag

Azooxanthellate / Non-Photosynthetic Corals

Azooxanthellate or non-photosynthetic corals do not require much if any light to survive. They include Gorgonians and Sun Corals.

Last post by Debbiem
in Re: Whats happening to my sun coral?


Marine Invertebrates

A board for marine reef invertebrates.

Last post by HK_Fuey
in Re: Show us your favourite invert

Marine Molluscs

Marine gastropod molluscs including; Seahares, Turbo snails, Nassarius snails, and predatory snails such as Sundial snails & some Nudibranchs.

Last post by Gav
in Re: Berghia Verrucicornis

Marine Crustaceans

Marine Crustaceans as in Porcelain crabs, Mithrax crabs, cleaner shrimps, blood shrimps, boxer shrimps, etc.

Last post by fr499y
in Re: Possible rogue cleaner shrimp

Marine Hardware


Discussions surrounding marine & reef lighting, Metal Halides, CFLs, T5s or LEDs.

Last post by ajm83
in Re: Maxspect recurve LEDs

Pumps and powerheads

Pumps for returns/skimmers/reactors/etc. & powerheads/wavemakers/etc. You get the idea ;-)

Last post by rusty_uk
in Re: Skimmer Help


A board for more specialised equipment such as dosing pumps, kalkwasser stirrers, calcium reactors, etc.

Last post by Mike
in Re: Doser tube termination


Marine Hardware Do-It-Yourself. A board containing topics about building & customising your own equipment.

Last post by fr499y
in Re: Diy Scrubber info


Discussions about Filtration, protein skimmers, uv sterilisation, ozone usage, nitrate reactors, biopellets, etc.

Last post by Paddone
in Re: Sulphur Nitrate Reactor

Reef Photography


Show off your pictures of your reef.

Last post by hixy
in Re: some pics of tank today

Photography Advice & Tips

If you need help getting good photos of your marine tank, fish or corals. Ask for advice here, please include camera model, as it helps to understand what features are available to you.

Last post by Jessica
in Re: What camera to buy?


For sale

A board to advertise your reefing equipment and livestock for sale.

Last post by ajm83
in Re: iQuatics T5 Controller 4x 39w

Swap Shop

A swap shop. A place for ReefBase members to offer frags, Corals, Zoanthids, Fish or equipment in exchange for other items.

Last post by patters19781
in Re: Green and red polyps


A request board for marine fish, corals or equipment.

Last post by Paddone
in Re: Small Coral Frags

Reef Keeping Suppliers

Become a Supplier

There's no sponsorship model on ReefBase. For members it means there's no bias towards vendors who are supporting the forum financially, so everyone is free to talk openly about products, whether they're a supplier here or not. For you it means there's no fee, and you can advertise your products or service and interact with UK Reefkeeping hobbyists.


iQuatics Online is the UK’s leading supplier of innovative aquarium lighting products.

Last post by Mike
in Re: iQuatics Carbon


Reefloat Auto Aquarium Products

Last post by SnowAddict
in Re: £50 for winning video

Reef Perfect

Reef Perfect is the UK’s leading supplier of aquarium cooling and control products for private and commercial customers alike.

Last post by Mike
in Re: Hows it going ReefPerfect?


Fistafiltration specialise in acrylic aquarium manufacture, and filtration such as sumps and reactors. FistaFiltration has been supplying acrylic tanks and products for over 20 years.

Last post by fizzy
in Re: fish display


MailOrderCorals are one of the leading suppliers of Marine Corals and Inverts in the UK. With over 4,000 Corals & Inverts ready for delivery direct to your door with our live arrival guarantee.

Last post by T-Bone Tyrone
in Re: Holiday

RO World

A UK supplier of high quality aquarium RO units. With a vast range of reverse osmosis accessories at unbeatable prices with quick delivery.

Last post by Marty
in Re: Some advice please


Fishmansfrags has been a market leader of UK mail order marine corals, frags and livestock since 2005 and is possibly the most popular and best priced retailer of marine corals and critters online today!

Last post by fishmansfrags


Reefphyto Ltd is a reliable source of quality Live Phytoplankton, Rotifers, Copepods (Zooplankton) all cultured and grown at our premises in the UK.

Last post by HK_Fuey
in Re: Live Food Discount for ReefBase Forum Subscribers


We are suppliers of marine fish, coral, inverts and tank equipment. Using the equipment we also sell helps us to understand the customers requirements in maintaining a healthy aquarium.

Last post by marinefarm
in UK sole distributor of Evergrow LED lighting

Aquarium Plumbing Ltd

We specialise in UPVC aquarium plumbing and fittings. All of our aquarium plumbing is fish and invert safe and can be used in fresh or salt water systems. We supply imperial and metric systems which are compatible with Deltec, Aqua Medic and any other European equipment.

Last post by Mike
in Re: Welcome to Aquarium Plumbing Ltd - our newest suppli...


Our marine products are both high quality and user friendly and have just one goal - to produce a successful healthy marine aquarium with stunningly beautiful corals and fish

Last post by ajm83
in Re: Metals+, iron level drops quickly


Cutthroat Corals are a mail order company that imports corals from all over the world. We strive to bring you a mixture of LPS, SPS and soft corals of all grades.

Last post by Steve's Marines
in Re: Welcome to our newest supplier Cutthroatcorals

Reefing Tools & Articles


A board for how-to guides on any area of the reefkeeping hobby.

Last post by T-Bone Tyrone
in Re: How to wire an STC1000 temperature controller with 2...


A board for polls to appear on homepage

Last post by T-Bone Tyrone
in Re: How often do you feed?


Dosing calculators, tank size calculators, etc.

Last post by Carol
in Re: Aquatic log


Useful articles on the reefkeeping hobby.

Last post by HK_Fuey

ReefBase - Info Centre

Forum Stats Forum Stats

57,442 Posts in 4,223 Topics by 1,251 Members.
Latest Member: BeginnerSalt
Latest Post: "Re: My new tank" ( Today at 9:07:41 am )
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Most Online Today: 564. Most Online Ever: 1,810 (Mar 26, 2014 9:11:55 am)

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Recent Topics

My new tank by Jamthemackem

Paddy's first marine tank by HK_Fuey

returning fish keeper by HK_Fuey

Zoa spiders by Dean69

NEED to know everything! by BeginnerSalt

Ady,s 42x30x20 reef by fishface

Gav's Aqua Oak by Gav

Hitch-hiker Crab ID please by Asco1104

Tims first and last upgrade by Gav

[BAD] Teddy Bear Crab by Gav

iQuatics T5 Controller 4x 39w by ajm83

Small Coral Frags by Paddone

Sulphur Nitrate Reactor by Paddone

Newbie. Need help with starfish? by Gav

Peacock Wrasse by HK_Fuey

Reef Keeping News

Robotic Deep Sea Explorer Uncovers Treasure Trove of Freaky Marine Life Aug 8, 2017 11:46:50 am by HK_Fuey

Read More
Pilot whale stranded N Kessock Aug 8, 2017 9:23:15 am by Gav
Pilot whale stranded at North Kessock has to be put down
Read More
Killer amphipods attack!!! Aug 7, 2017 4:20:03 pm by HK_Fuey

Read More
Giant Sunfish Jul 24, 2017 10:43:27 am by Gav
Meet the new giant sunfish that has evaded scientists for centuries

Read More
Skimmer air gauge for tuning Jun 5, 2017 11:08:36 pm by Asco1104
Might be a gimmick but is interesting

Read More
Protein From Mussel Glue Used To Help Prevent Scarring May 17, 2017 8:57:08 pm by HK_Fuey
There has been a lot of interest, but little progress, in helping wounds heal without scar tissue. One of the main issues to overcome is the abnormal reorganization of
Read More