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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 kind of Algae will you find in an ATS?


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 marine_newbie
in Re: Introduction

ReefBase Lounge

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

Last post by Mike
in Recent downtime


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

Last post by Marty
in Re: Well I have another tank !!!

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 Esoteric
in Re: My Evo 13.5.

Tank of the month

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

Last post by Animal
in Re: How this might work

General Reef Keeping

General Reef Discussions

General non-specialised reefkeeping questions & discussions.

Last post by hixy
in Re: water changes and Anemones

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 hixy
in Re: conflicting info


All reef chemistry related posts should go in here.

Last post by hixy
in Re: My tank readings

Reefing News

Post links or information on any related reefing news.

Last post by Ratvan
in Re: Micro fragging could save coral reefs

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 Tom Fenton
in Re: One of the best nano tanks I've seen.


General competitions on member chosen subjects.

Last post by DUSTYBOY272
in Re: Attempting free London Aquarium Tickets


Reefbase ID database

A database of common living things found in our reef tanks

Last post by Animal
in Just in case

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 mightyhatter
in Re: Stomatella?

Marine Fish

General Marine Fish

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

Last post by Harbinder Flora
in green parrot wrasse

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: Upside down Clown

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 HK_Fuey
in Re: Maroon clown fish has laid eggs...what do I need to ...

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 hermit
in Re: Vampire tang hiding at back of tankhi all

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 jackmyers200
in Re: My juvenile emperor angel


General Corals

A general board for all Corals & Anemones, for Coral identification, and general discussion.

Last post by Toper0
in Re: Daft Question

Soft Corals

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

Last post by DUSTYBOY272
in Re: ID Req'd

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 Toper0
in Re: Duncan Coral

SPS Corals

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

Last post by Matt_toynton
in Re: Porites white patch syndrome ?

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 Ratvan
in Re: Invert only?!

Marine Molluscs

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

Last post by Ratvan
in Re: Cerith snail

Marine Crustaceans

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

Last post by Toper0
in Re: New Additions

Marine Hardware


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

Last post by Ratvan
in Re: Kessil A360WE

Pumps and powerheads

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

Last post by Gav
in Re: jebao dosing pump


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

Last post by Aqua Splendor
in (Video) Eheim Aquarium heater Jager vs Thermocontrol-E


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

Last post by Toper0
in Breeder Box Refugium


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

Last post by semiroundel
in Re: Heck of a lot of Nitrate?

Reef Photography


Show off your pictures of your reef.

Last post by ajm83
in Re: Fashion accessory to tuxedo

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 Toper0
in Re: D & D Lens Cover


Free to a good home

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

Last post by Ratvan
in Re: Splendid Dottyback (FREE TO AQ GOOD HOME)

For sale

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

Last post by Mr0range
in For Sale - Solid Red Goniopora Frags

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 DUSTYBOY272
in Re: Pulsing Xenia and Turbo Snails - anyone want to swap...


A request board for marine fish, corals or equipment.

Last post by stitch76
in 3-4 ft glass box

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 badger
in Re: Aquatic log


Useful articles on the reefkeeping hobby.

Last post by Mike
in Re: All Marine Habitat Magazine Backissues Downloads

ReefBase - Info Centre

Forum Stats Forum Stats

70,663 Posts in 5,670 Topics by 4,343 Members.
Latest Member: FloridaAff
Latest Post: "Re: My Evo 13.5." ( Today at 3:14:18 am )
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819 Guests, 12 Reefers

Reefers active:
Amo Manik, Esoteric, 1meanmachine, HK_Fuey, ajm83, FloridaAff, Mike, mightyhatter, Azul_pshye, martinogden, hixy, Toper0

Most Online Today: 846. Most Online Ever: 10,671 (Nov 29, 2019 6:20:30 am)

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Please leave a note if you can with your forum username so we can leave a thank you note on the donations thread to let you know it’s been received.

Recent Topics

My Evo 13.5. by Esoteric

GlennF's DSR tank by glennf

water changes and Anemones by hixy

Kessil A360WE by Ratvan

Recent downtime by Mike

Introduction by marine_newbie

Aqua Splendor Nano Reef Competition by Aqua Splendor

Amo's Tank thread by Amo Manik

(Video) Eheim Aquarium heater Jager vs Thermocontrol-E by Aqua Splendor

conflicting info by hixy

For Sale - Solid Red Goniopora Frags by Mr0range

Andy's Reefer 250 by marine_newbie

3-4 ft glass box by stitch76

Cerith snail by Ratvan

jebao dosing pump by Gav

Clams by DUSTYBOY272

Aiptasia by HK_Fuey

Where is everyone? by Azul_pshye

Upside down Clown by HK_Fuey

My tank readings by hixy

My RSM250 by ajm83

Shallow reef/ Frag tank by Claire

semigrow it5060 by neenan243

Smif's reef by ajm83

Moving tank & livestock to Austria by svanjo11

Starter tank by Esoteric

Long time no see by Gav

(Video) Unboxing and Setup of the Reefwave 25 Red Sea pump by Aqua Splendor

(Video) Eheim Thermocontrol-E Review - Aquarium heater by Aqua Splendor

Vampire tang hiding at back of tankhi all by hermit

Reef Keeping News

Amwell aquatics Oct 24, 2019 1:01:59 am by Animal
Just thought I'd let you know that amwell aquatics which is based at thornwood Essex will be closing down for good .they are moving all their stock to their other shop in Cambridge
Read More
Guppys oh my god. Oct 17, 2019 9:14:31 am by Animal
AS you all know I do love a challenge,I've got a friend in the USA that has set up a small test tank and has successfully acclimatised guppys to marine .
Why I don't know lol
Read More
Another Palytoxin victim Aug 7, 2019 4:59:04 pm by ajm83
The adults, first hit by the toxins, spent one week in hospital. Katie's three girls, who were asleep, were discharged the day after.

Katie added: "We had gone on
Read More
World Reef Day June 1st Jun 2, 2019 10:29:02 am by Gav
A little late , but thought I'd bring attention to this either way
Read More
Calcium and Mag testing May 16, 2019 7:02:28 pm by geordie
Saw this write up and thought i would share,a bit of a way to go but sounds promising. Made in the USA you can google images and further write ups.

We didn't want to ann
Read More
A.M Aquatics closed down Apr 19, 2019 2:35:30 pm by geordie
Hi a shame to see the above lfs has decided to call it a day,been shut a few weeks now. Always enjoyed a visit Ash and Alan always helpful, will be a miss.
Read More
New : Redsea reefled Apr 4, 2019 2:42:42 pm by Gav
Read More
Next Threshold: Sexual Culture of Aquarium Corals Mar 15, 2019 3:31:25 pm by HK_Fuey

Read More