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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: What does GHA stand 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 Tenko2
in Re: Starting again .....10 years on.

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 Shain Hunton
in Re: Deb's Red Sea Reefer 350L Upgrade

Tank of the month

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

Last post by mav469
in Re: Any news on the voting on TOTM

General Reef Keeping

General Reef Discussions

General non-specialised reefkeeping questions & discussions.

Last post by ChrisHibs
in Re: Help with ID please.

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: Small tank kit.

Reefing News

Post links or information on any related reefing news.

Last post by HK_Fuey
in Hidden Reef Seven Times The Size Of NYC

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 mav469
in Re: Tank of the Month

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: Blue/green chromis

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: HK's white spot (Marine Ich) outbreak

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 Marty
in Re: Overcrowding!

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: Poorly anemone??

Soft Corals

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

Last post by Charly Coulter-Smyth
in Re: My first coral

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 Angrymac
in Re: New home needed for my corals

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 Angrymac
in Re: Stomatella snails

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 Debbiem
in Re: blue hermit crab

Marine Hardware


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

Last post by HK_Fuey
in Re: Maxspect Ethreal


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

Last post by Marty
in Re: UV sterilizer


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

Last post by HK_Fuey
in Re: D.I.Y Protein Skimmer Collection Cup Full Buzzer/Ala...


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

Last post by Gav
in Re: Filter socks

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 fishface
in Re: Has anyone got any corals or frags for sale?

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 HK_Fuey
in Re: Spaghetti worms

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 customers tanks

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...

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

42,357 Posts in 3,180 Topics by 996 Members.
Latest Member: sjpp
Latest Post: "Re: Deb's Red Sea Reefer 350L Upgrade" ( Today at 11:02:24 pm )
View the most recent posts on the forum.

Reefers Online Reefers Online

297 Guests, 49 Reefers (21 Spiders)

Reefers active:
hotashes, Asco1104, Tenko2, Shain Hunton, mezzygohil, garethwood, Marty, grandconjuration, carlcall, damienpbuckley, Cravenel, HK_Fuey, reefloat, 5arahlou, Kaiser99, Eady, philip_eunice1, paulgreg0ry, Wanch, fishface, ChrisHibs, thebiscuitmafia, BigShort, Stib, Soft.coral.reefer, woolleson, hixy, bjomat, reefkeeper, Hai, Garf, salty_boris, maxim.dockx2, ortakoyluoglu, Mol_PMB, jordanweasel, Lesleyolly, glennf, fr499y, cheyenne77, Angrymac, Travis567, Maxius, NasoUK, jam5971, romperstomper, T-Bone Tyrone, Chad20056, Debbiem, Yahoo!, Google (AdSense) (8), Google (12)

Most Online Today: 425. Most Online Ever: 1,810 (Mar 26, 2014 9:11:55 am)

Recent Topics

Deb's Red Sea Reefer 350L Upgrade by Shain Hunton

Starting again .....10 years on. by Tenko2

Graeme's 6x2x2 900L by Steve's Marines

Small tank kit. by HK_Fuey

And so the spending has started.. by Stib

Has anyone got any corals or frags for sale? by fishface

Fr499y's 4 footer mixed reef by fr499y

Stomatella snails by Angrymac

Steve's LPS Reef by Marty

Hidden Reef Seven Times The Size Of NYC by HK_Fuey

*For Sale* Zoa Frags by fr499y

Marine aquarium books for Sale by Lesleyolly

Help with ID please. by ChrisHibs

PH PROBE. by Shain Hunton

Filter socks by Gav

Better skimmer maybe by hixy

Gav's Aqua Oak by HK_Fuey

Using Real Seawater by Gav

Spaghetti worms by HK_Fuey

who else is using reefloat AWC? by Debbiem

Upgrading do i do it by ChrisHibs

customers tanks by reefloat

D.I.Y Protein Skimmer Collection Cup Full Buzzer/Alarm by HK_Fuey

Sarah's Tank by HK_Fuey

Led light height and schedule. by hixy

Support ReefBase

ReefBase is not for profit

We don't display ads, and suppliers here don't pay us a penny.

Any donation of any amount really helps.

Reef Keeping News

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 -
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Email from Eye-Fi Jul 1, 2016 1:02:53 pm by Mike
I got this today. Just FYI.

To Our Eye-Fi X2 and Earlier Generation Product Customers
View this email in your browser

June 30, 2016<
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Lionfish invade Mediterranean Jun 28, 2016 8:46:20 am by Gav
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