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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: In a power cut, the most important thing to plug into your UPS, generator, etc is:


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 Terry rh11
in Re: Hello.

ReefBase Lounge

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

Last post by Steveanem
in Re: Which boiler?


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

Last post by HK_Fuey
in Re: My friend's massive basement freshwater setup

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 Asco1104
in Re: Andy's 85L Nano

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: Is it necessary to use a doser when growing corals

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 Asco1104
in Re: Confused


All reef chemistry related posts should go in here.

Last post by Amo Manik
in Re: couple of questioms

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 HK_Fuey
in Re: Friend or foe

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: Pesky aip in my skimmer...

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 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 Benfuller
in Re: Tang compatability.

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: Lighting and corals

Soft Corals

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

Last post by rusty_uk
in Re: Can i trim down this Toadstool

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 fr499y
in Re: Red Linckia Starfish squirting?

Marine Molluscs

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

Last post by Paddy
in Re: Crocus clam

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 Gav
in Re: AI owners

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 Asco1104
in Re: D-D Calcium reactor set up


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

Last post by Marty
in Re: DIY macro algae reactor


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

Last post by Asco1104
in Re: Ro di setup question.

Reef Photography


Show off your pictures of your reef.

Last post by jordanweasel
in Re: Holiday in the Indian ocean video

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 Gav
in Re: How to get good picture of corals??


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 Asco1104
in Vectra M1 pump

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 Enzo montini
in 5.5ft x2ft X1.5


A request board for marine fish, corals or equipment.

Last post by Asco1104
in Re: Harlequin Shrimp

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 ajm83
in Re: Metals+, iron level drops quickly

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

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

AI owners by Gav

Is it necessary to use a doser when growing corals by Mike

Chaeto growing light by jordanweasel

Ro di setup question. by Asco1104

Hello. by Terry rh11

Tang compatability. by Benfuller

Vectra M1 pump by Asco1104

Confused by Asco1104

Andy's 85L Nano by Asco1104

kurfuffled by ajm83

couple of questioms by Amo Manik

Lighting advise by Asco1104

My first marine tank - Planning by Radiation91

Pesky aip in my skimmer... by Asco1104

Looking for lighting advice by fr499y

How to feed slow eating fish by fr499y

selection of goodies - Alk, Cal, Mag Test kits - Reef-Roids by fr499y

Graeme's 6x2x2 900L by fr499y

What is this algae? by fr499y

Tims first and last upgrade by Asco1104

fluval m60 by Asco1104

Various marine equipment for sale by JCJ

Hello by Matt_toynton

Beginner Reef Tank advice needed. by Matt_toynton

DIY macro algae reactor by Marty

Optimal flow for reef tank by HK_Fuey

SnowAddicts Redsea Max Nano by SnowAddict

Friend or foe by HK_Fuey

Coral Identification by fr499y

Chaeto growing and PH by Asco1104

Skimmer, Lights, Wave Makers, Refractometer, Temp Controllers + more by fr499y

GlennF's DSR tank by Asco1104

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
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Mexico creates huge national park Nov 25, 2017 8:54:30 am by Gav

Mexico creates huge national park to protect marine life -
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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