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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: Select the kelvin rating of the light that will grow corals the fastest:


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: Stand builders


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

Last post by Carol
in My Oscars

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 Carol
in Re: GlennF's DSR tank

Tank of the month

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

Last post by fr499y
in Re: Would it be possible to get the tank of the month ac...

General Reef Keeping

General Reef Discussions

General non-specialised reefkeeping questions & discussions.

Last post by HK_Fuey
in Re: herbie overflow driving me mad

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 Carol
in Re: Starfish hitch-hiker - friend or foe?

Reefing News

Post links or information on any related reefing news.

Last post by Asco1104
in Re: Show tanks from MACNA 2016

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 fishface
in Re: This one reminds me of glenn's DSR tank


General competitions on member chosen subjects.

Last post by HK_Fuey
in Re: Most charaterful creature vote

Marine Fish

General Marine Fish

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

Last post by Mol_PMB
in Re: Space for one more fish...

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 fishface
in Re: Regal has ws

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 Chilax
in Re: Clown Wars

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 Carol
in Re: Yellow tang behaving strangely!

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 damienpbuckley
in Re: How important is testing and dosing strontium in a r...

Soft Corals

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

Last post by HK_Fuey
in Re: Anyone got a green one

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 Marty
in Re: Torch Coral Questions - funny tentacles

SPS Corals

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

Last post by Marty
in Re: Sps growth rate

Azooxanthellate / Non-Photosynthetic Corals

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


Marine Invertebrates

A board for marine reef invertebrates.

Last post by Marty
in Re: Feather dusters

Marine Molluscs

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

Last post by romperstomper
in Re: Cerith snails

Marine Crustaceans

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

Last post by Carol
in Larry the Lobster

Marine Hardware


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

Last post by Amo Manik
in Re: Ai Hydra 26 led light


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

Last post by Gav
in Re: Tank monitors


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

Last post by Gav
in Re: Drilling


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

Last post by HK_Fuey
in Re: UV sterilizers - any good?

Reef Photography


Show off your pictures of your reef.

Last post by fishface
in Re: My fish

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 Steve's Marines
in Live rock for sale Cambridgeshire

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 hixy
in Swap kessil a160we for Chinese led


A request board for marine fish, corals or equipment.

Last post by reefloat
in Re: Wanted Auto top up

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 50% off the Series 2 Aqualumi & Free Express Delivery - ...


Reefloat Auto Aquarium Products

Last post by reefloat
in holiday

UK Marine Lighting

The UK's Marine LED lighting specialists. Providing quality LED lighting to suit all budgets & aquariums.

Last post by ukmarinelighting
in Evergrow LED Lighting sale now on at UK Marine Lighting

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


Reef:Logger is a cloud based reef logging system. Via a browser or phone, you can plot your tanks history, interact with your local fish store, and share your experience online.

Last post by Mike
in Re: Introduction

Bit O' Blue

Bit O' Blue is a complete store for the marine aquarist holding fish, corals, inverts and all necessary associated dry goods.


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 D2120 sale

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 Thepipeman
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 Marty
in Re: Welcome Colombo

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 Marty
in Re: Aquatic log


Useful articles on the reefkeeping hobby.

Last post by HK_Fuey
in Marine fish disease identification

ReefBase - Info Centre

Forum Stats Forum Stats

44,518 Posts in 3,290 Topics by 1,021 Members.
Latest Member: Kevyn Anderson
Latest Post: "Larry the Lobster" ( Today at 9:39:05 am )
View the most recent posts on the forum.

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636 Guests, 62 Reefers (23 Spiders)

Reefers active:
Carol, grandconjuration, Angrymac, Marty, bjomat, Mol_PMB, hixy, Gav, Debbiem, thebiscuitmafia, Asco1104, ChrisHibs, damienpbuckley, jodajunglet84, glennf, olyoz, Chad20056, fr499y, hotashes, Nick Smith, scruffy_77, Kaiser99, salty_boris, Colombo, Rliddle, jam5971, ortakoyluoglu, philip_eunice1, tomjmcd, cheyenne77, mezzygohil, HK_Fuey, Mike, reesdanny, carlcall, Shain Hunton, Maxius, britdog, woolleson, Amo Manik, ajm83, Eady, Tenko2, tsalicran, romperstomper, Tommy10385, stew1, Scott Lawton, zalexanderk, fishface, rusty_uk, stewie2505, james855, maxim.dockx2, Lesleyolly, garethwood, App3rl3y89, Stib, T-Bone Tyrone, Gollie61, stitch76, Asia, Yahoo!, Google (AdSense) (7), Google (15)

Most Online Today: 721. Most Online Ever: 1,810 (Mar 26, 2014 9:11:55 am)

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

Recent Topics

Larry the Lobster by Carol

GlennF's DSR tank by Carol

Space for one more fish... by Mol_PMB

Yellow tang behaving strangely! by Carol

Gav's Aqua Oak by Angrymac

Marty's Reef Tank by fr499y

My Oscars by Carol

Deb's Red Sea Reefer 350L Upgrade by fr499y

Drilling by Gav

herbie overflow driving me mad by HK_Fuey

Graeme's 6x2x2 900L by HK_Fuey

New tank cycle question by Carol

Stand builders by HK_Fuey

Could my Nassarius Snail be breeding? by ChrisHibs

Bryopsis by fr499y

Gollies Kent Marine 94L 'new tank' thread by Carol

Starfish hitch-hiker - friend or foe? by Carol

Tims first and last upgrade by Angrymac

And so the spending has started.. by Asco1104

My reef mark 2 by Marty

Reef Keeping News

Show tanks from MACNA 2016 Sep 23, 2016 9:41:09 pm by HK_Fuey
Read More
Fish recorded singing dawn chorus on reefs just like birds Sep 22, 2016 11:16:11 am by HK_Fuey

Read More
Life on an underwater volcano Sep 19, 2016 4:11:36 pm by HK_Fuey
Read More
Sea snails could save barrier reef from starfish Aug 25, 2016 8:30:59 am by Gav
Sea snails could save Great Barrier Reef from starfish -
Read More
Googly eyed purple squid sighting Aug 17, 2016 9:16:48 am by Gav
Read More
Captive-Bred “Dory” A Reality Jul 20, 2016 11:34:18 pm by HK_Fuey
Rising Tide Conservation and the UF Tropical Aquaculture Lab Announce Ocean Conservation Breakthrough Success raising Pacific Blue Tangs
Read More