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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.

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

Last post by HK_Fuey
in Re: Introduction

ReefBase Lounge

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

Last post by Mike
in Re: Donation


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

Last post by fr499y
in Re: The South American Biotope - with a twist

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 HK_Fuey
in Re: Tims first and last upgrade

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 deano123
in Re: Hammer coral bleaching

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 HK_Fuey
in Re: Undesired guests


All reef chemistry related posts should go in here.

Last post by Paddone
in Re: Good Ca, Mg and pH but high Kh

Reefing News

Post links or information on any related reefing news.

Last post by Asco1104
in Re: Fiji ban

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: Stunning soft coral reef tanks


General competitions on member chosen subjects.

Last post by HK_Fuey
in Re: Most charaterful creature vote


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 Stevie B
in Re: Anemone ID

Marine Fish

General Marine Fish

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

Last post by HK_Fuey
in Re: Mixing triggerfish

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: White spot in marine tank

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 Marty
in Re: Clown fish just decided to host torch

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 HK_Fuey
in Re: Mixing 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 HK_Fuey
in Re: Recommend me beginners corals

Soft Corals

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

Last post by YeahYeahJohnny
in Re: How to control Pulse Polyps

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 Mike
in Re: Is this a little brittle star?

Marine Molluscs

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

Last post by fr499y
in Re: Turbo Snail behaviour

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 Hai
in Re: Opinions on my lighting choices.

Pumps and powerheads

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

Last post by HK_Fuey
in Maxspect gyre controller


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

Last post by HK_Fuey
in Re: Pumped RO unit not going over 4bar, any ideas?


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

Last post by Paddy
in Re: how to wire sockets in a stand


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

Last post by HK_Fuey
in Re: New filter sock - skimmer going crazy

Reef Photography


Show off your pictures of your reef.

Last post by Stevie B
in Re: My nem

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 Mike
in Re: Mobile webpage photo uploading


Free to a good home

A board to advertise things you're giving away to fellow reefers.

Last post by fr499y
in Re: selection of goodies - Alk, Cal, Mag Test kits - Ree...

For sale

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

Last post by HK_Fuey
in Re: Blue sympodium- RUNCORN

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 jamiedb1977
in my kessil a360we x2 with controller for your radion or h...


A request board for marine fish, corals or equipment.

Last post by MattTucker
in Skimmer, Ato, wavemakers

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 iQuatics-Online
in Universal Hanging Bar Offer

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 Asco1104
in Re: Cartridges needed for Kent Marine Hi-S (the Maxxima ...


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 Evergrow Ocean Revive Artic T247 (S026B) Dimmable Marine...

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 jordanweasel
in Re: Weir comb


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 bertie1969
in Re: Comparison of Colombo and Salifert Ca, Kh, and Mg te...

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

Support ReefBase

We don't display ads, and suppliers of the forum don't pay us a penny.

Any donation of any amount really helps offset the running costs.

Recent Topics

Hammer coral bleaching by deano123

Tims first and last upgrade by HK_Fuey

New filter sock - skimmer going crazy by HK_Fuey

Undesired guests by HK_Fuey

Choosing the reef tank by HK_Fuey

Pumped RO unit not going over 4bar, any ideas? by HK_Fuey

Introduction by HK_Fuey

Blue sympodium- RUNCORN by HK_Fuey

What size heater by HK_Fuey

Mixing tangs by HK_Fuey

Mixing triggerfish by HK_Fuey

Recommend me beginners corals by HK_Fuey

My tank is a state! Help? by Asco1104

Various marine equipment for sale by JCJ

Donation by Mike

Hello! A Complete Newbie! by HK_Fuey

New to nano by ajm83

items for sale by chilliman

Lid for open top tank by daniel04m

Skimmer, Ato, wavemakers by MattTucker

Comparison of Colombo and Salifert Ca, Kh, and Mg test kits by bertie1969

Can you help me to catch my fish? by pam007

My first marine tank 4x2x2 by fr499y

Diatoms/Dino by ajm83

Good Ca, Mg and pH but high Kh by Paddone

Anemone ID by Stevie B

cleaning sponges by Stevie B

Hello by Asco1104

Po4 No3 reduction why can’t I by HK_Fuey

Is this a little brittle star? by Mike

Clueless - one bit of advice please by Jick the Reefer

Arka rock and other bits for sale by Amo Manik

HDReef Tank by Hai

Sand & Rock by Hai

Reef Keeping News

Fiji ban Dec 30, 2017 12:55:44 am by HK_Fuey
Read More
Damaged Scottish reef 'biggest of its kind' Dec 29, 2017 9:08:54 am by Gav
Something closer to home

Damaged Scottish reef 'biggest of its kind' -
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Lobster with 'pepsi' tattoo Nov 30, 2017 4:15:15 pm by Gav
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GBR Coral breeding program Nov 26, 2017 5:09:13 pm by Gav
Read More
Mexico creates huge national park Nov 25, 2017 8:54:30 am by Gav

Mexico creates huge national park to protect marine life -
Read More
More acidic oceans will affect all sea life Oct 27, 2017 5:28:50 pm by Gav

More acidic oceans 'will affect all sea life' -
Read More
Marine shows in the UK Sep 14, 2017 10:15:34 pm by Heather Domrow
Are there any shows open to the public at places like the NEC or Earls Court for marine fish/coral keeping? Thanks.
Read More
Belize coral reef restoration Aug 22, 2017 2:45:48 pm by Gav
Read More
Robotic Deep Sea Explorer Uncovers Treasure Trove of Freaky Marine Life Aug 8, 2017 11:46:50 am by HK_Fuey

Read More