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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: An ORP probe is most useful if;


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 Crawley_Chris
in Re: Hi From Sussex


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

Last post by Carol
in Re: Little spawning

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 Sam Cunningham
in Re: Graeme's 6x2x2 900L

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 Sam Cunningham
in Re: Reef Club in Surrey/Berkshire/Hampshire?

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: Salt


All reef chemistry related posts should go in here.

Last post by ajm83
in Re: Kh Guardian

Reefing News

Post links or information on any related reefing news.

Last post by Sam Cunningham
in Re: Global pet expo - day 1

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 Carol
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 HK_Fuey
in Re: [Bad] Mantis Shrimp 🦐

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: What is this?

Marine Fish

General Marine Fish

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

Last post by Marty
in Re: Pufferfish

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 Asco1104
in Re: how do you quarantine corals, crabs etc, not just fi...

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 Rliddle
in Re: Mixed clowns

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 damienpbuckley
in Re: Sulky Yellow Tang

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 Amo Manik
in Re: Saving a partially stripped coral

Soft Corals

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

Last post by Marty
in Re: why cant I keep soft corals

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 Gav
in Re: Goniopora worm

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 Claire
in Re: Sun coral placement


Marine Invertebrates

A board for marine reef invertebrates.

Last post by HK_Fuey
in Supplementary feeding a starfish

Marine Molluscs

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

Last post by Carol
in Re: Living Dangerously

Marine Crustaceans

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

Last post by hixy
in Re: Anemone on the move

Marine Hardware


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

Last post by ajm83
in Re: How much PAR are you running?


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

Last post by fr499y
in Re: IM20 Fusion Nano. Which skimmers fit?


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

Last post by HK_Fuey
in Re: Weir comb glass or plastic?


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

Last post by Amo Manik
in Re: Deltec SC1456

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 cscashby
in Full marine tank, sump and cabinet (needs work!)

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 Re: Ai hydra 52 swap for longer led


A request board for marine fish, corals or equipment.

Last post by Crawley_Chris
in Skimmer needed desperately South East

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 reefloat
in Re: 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


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 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 HK_Fuey
in Re: Phosphate Ex review


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
in Low pH: Causes and cures

ReefBase - Info Centre

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Recent Topics

Graeme's 6x2x2 900L by Sam Cunningham

6 months in by Sam Cunningham

Sam's E170 - First foray into the hobby by Sam Cunningham

Salt by HK_Fuey

Tims first and last upgrade by HK_Fuey

customers tanks by reefloat

Full marine tank, sump and cabinet (needs work!) by cscashby

Emsybobs tank by ajm83

Asia's tank swap by HK_Fuey

Reef Club in Surrey/Berkshire/Hampshire? by Sam Cunningham

Deltec 1455 or 1456 cleaning head (manual) by Asco1104

GlennF's DSR tank by fr499y

Elitech 1550 temp controller by fr499y

Gav's Aqua Oak by Asco1104

Pico 30ltr ATO by reefloat

Hi From Sussex by Crawley_Chris

Global pet expo - day 1 by Sam Cunningham

Weir comb glass or plastic? by HK_Fuey

Tom 48x24x24 by Asco1104

Kh Guardian by ajm83

How much PAR are you running? by ajm83

What is this? by HK_Fuey

[Bad] Mantis Shrimp 🦐 by HK_Fuey

Free Items Just Postage To Pay by rusty_uk

Emerald crabs by Claire

LED refugium light. by HK_Fuey

Photometer test kit by ajm83

[BAD] Eunice Worm 🐛 by ajm83

[GOOD] Stomatella Snail 🐌 by Mike

Rossmont powerheads and waver by Angrymac

Saving a partially stripped coral by Amo Manik

[PERS PREF] Finger algae by Gav

[GOOD] Bi-Valve 🐚 by Gav

Reef Keeping News

Global pet expo - day 1 Mar 23, 2017 11:06:39 pm by HK_Fuey
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Anger over UK ship's damage to pristine reef Mar 14, 2017 3:58:59 pm by Gav

Anger over UK ship's damage to pristine reef -
Read More
Venus fly trap sea anemone Mar 7, 2017 10:21:39 am by fr499y
pretty cool this one :)
Read More
50 Reefs project Feb 24, 2017 11:42:21 am by HK_Fuey

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Planet Earth II coming soon Feb 20, 2017 5:31:20 pm by HK_Fuey
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Harry Potter Crab Feb 15, 2017 2:54:29 pm by HK_Fuey

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Underwater photographer of the year 2017 winners – in pictures Feb 15, 2017 2:43:26 pm by HK_Fuey

Read More
Nat Geo vid on Diatoms Feb 9, 2017 7:03:24 pm by Mike
If you didn't know that diatoms are actually exquisite little gems under a microscope then you're in for a treat.

You're in for a treat even if you did.  :lol:
Read More
Pom Pom Crabs have been fragging anemones long before us Feb 6, 2017 6:04:36 pm by Mike
Turns out Pom Pom crabs frag their anemones if they only have one!

Read More
Jellyfish wash up 'like wallpaper' on Australian beach Feb 4, 2017 2:41:18 pm by Gav

Jellyfish wash up 'like wallpaper' on Australian beach -
Read More