Abbreviations Explained

Many abreviations are used on forums and the internet when discussing the hobby, here are most of the meanings behind them.

AB
Aqualine Buschke, lighting manufacturer

AC
Activated carbon, chemical filtration media / alternating current

AC II
AquaController II, all-in-one monitor & controller

acro
Acropora, a type of SPS coral

AFAIK
As far as I know

AFM
Aquarium Fish Monthly, magazine

AGA
All-Glass Aquarium, aquarium manufacturer

AL
Aqualink, aquarium bulletin board

ALK
Alkalinity, measure of buffering capacity of water

AM3K
Ampmaster 3000, a model of water pump made by Dolphin Aquarium & Pet Products, Inc.

ARS
Aquatic Reef Systems, RO/DI mail order place

ASAP
As soon as possible

ATC
Automatic temperature compensating, a feature on some refractometers

ATM
At the moment

ATS
Algae turf scrubber, reef setup technique

Bfly
Butterflyfish

BOD
Biological oxygen demand

BTA
Type of anemone (Entacmaea quadricolor) / bubble-tipped, bulb tentacle, bulb tip

BTW
By the way

Ca
Calcium

CA
Custom Aquatic, mail order place

CaCl2
Calcium chloride

CaCO3
Calcium carbonate

Ca(OH)2
Calcium hydroxide

CC
Crushed coral / Counter current, type of protein skimmer

Cl
Chlorine

CO2
Carbon dioxide

CO3
Carbonate

CPR
Creative Plastics Research, manufacturer of fresh and saltwater products

CSL
Custom Sea Life, lighting manufacturer

CTA
Cellulose triacetate, type of RO membrane

Cu
Copper

CYANO
Cyanobacteria

DD
Downdraft, type of protein skimmer

DE
Double ended metal halide metal bulb

DFS
Drs. Foster & Smith, Inc., mail order place

DI
Deionization, type of water purification

DIY
Do it yourself

dKH
Degrees of carbonate hardness, measure of alkalinity

DO
Dissolve oxygen

DOC
Dissolved organic carbon

DSB
Deep sand bed

DT's
Brand of refrigerated living phytoplankton

ER
Euro-Reef, skimmer manufacturer

FAMA
Freshwater and Marine Aquarium magazine

FAQ
Frequently asked questions

Fe
Iron

FFE
Flying Fish Express, mail order place

FO
Fish only, type of marine aquarium

FOWLR
Fish Only with Live Rock

frag(s)
Broken or cut pieces of coral which will eventually grow into a new animal

"fuge"
Short for refugium

FW
Freshwater

FWIW
For what its worth

FYI
For your information

FYM
For your misinformation

GAC
Granular activated carbon, chemical filtration media

GAL
Gallon

GBR
Great Barrier Reef

GFCI/GFI
Ground fault circuit interrupter / Ground fault interrupter

GPH
Gallons per hour

GOB
Green open brain

GSP
Green star polyps

HCO3
Hydrogen carbonate

HD
Home Depot

HID
High intensity discharge, type of light

HO
High output fluorescent light

HOT
Hang on top, type of skimmer

HPS
High pressure sodium, type of light NOT for reefs but the ballasts concern them

HQI
High quartz iodide, type of light

HSA
High speed aeration, type of proteins skimmer

HTH
Hope this helps

I
Iodide

I2
Iodine

IA
Inland Aquatics, mail order company

ID
Identify/Identity

IIRC
If I recall correctly

IM
In my

IMCO
In my considered opinion

IME
In my experience

IMEO
In my expert opinion

IMHO
In my humble/honest opinion

IMNSHO
In my not so humble/honest opinion

IMO
In my opinion

IO
Instant Ocean, brand of synthetic salt mix

IO3
Iodate

IOW
In other words

IPSF
Indo-Pacific Sea Farms, mail order place

IR
Infrared, type of light of longer wavelength than visible light

IRC
Internet relay chat

ISP
Internet service provider

JME
Just my experience.

JMO
Just my opinion.

K
kelvin (mechanism for measuring spectrum of lighting, should be labeled degrees K) / Potassium

KALK
Kalkwasser, German for calcium hydroxide solution or limewater

KI
Potassium iodide

KISS
Keep it simple stupid
L
Liter
LED
Light emiting diode

LFS
Local fish store

LHS
Local hardware store

LMAO
Laughing my *** off

LOL
Laughing out loud

LPS
Large polyped Scleractinian (stoney) coral

LR
Live rock

LS
Live sand

LT
Litre

LTA
Type of anemone (Macrodactyla doreensis) / Long tentacle anemone

MACNA
Marine Aquaria Conference of North America, held annually

MD
Marine Depot, mail order place

MEQ/L
Milli-equivalents per litre, measure of alkalinity

Mg
Magnesium

Mg/L
Milligrams per litre

MH
Metal halide light

MJ
Maxijet, powerhead manufacturer

MM
Miracle Mud, method of aquarium filtration

MO
Mail order

MV
Mercury vapor, type of light

Na
Sodium

NaCO3
Sodium carbonate

NaOH
Sodium hydroxide

NFW
No way

NH3
Ammonia

NH4
Ammonium

NNR
Natural nitrate reduction, reef setup technique

NO
Normal output fluorescent light

NO2
Nitrite

NO3
Nitrate

NP
No problem

NRN
No reply necessary

NSW
Natural seawater

O2
Oxygen

OBTW
Oh by the way

ORP
Oxidation reduction potential, the ability to take or give electrons

OTOH
On the other hand

PA
Premium Aquatics, mail order place

PAR
Photosynthetically active radiation, lighting quantity

PC
Power compact fluorescent light

PFO
Lighting manufacturer

pH
Measure of the concentration of hydrogen ions, equal to -log[H+]

PH
Powerhead, water pump

PITA
Pain in the @ss

PLS
Please

PM
Precision Marine, marine filtration component manufacturer

PO4
Phosphate

"pods"
Non-specific types of copepods, amphipods and such

POS
Piece of doodoo

PPM
Parts per million, equivalent to mg/l (milligrams per litre)

PUR
Photosynthetically usuable radiation, lighting quantity

PVC
Poly vinyl chloride, used for piping / plumbing

RC
Reef Central, aquarium bulletin board supreme

RDO
Reefs.org ("reefs-dot-org"), aquarium bulletin board

RK
Reef Keeping, on-line aquarium magazine

RO
Reverse osmosis, type of water purification

ROB
Red open brain

RO/DI
Reverse osmosis, followed by deionization, type of water purification

ROFL
Rolling on the floor laughing

ROFLOL
Rolling on the floor laughing out loud

ROTFL
Rolling on the floor laughing

ROFLMAO/ROTFLMAO
Rolling on the floor laughing my *** off

ROTFLOL
Rolling on the floor laughing out loud

RR
Reef ready, aqaurium with pre-drilled holes and overflows

RTN
Rapid tissue necrosis

RUGF
Reverse flow undergravel filter

SAL
Salinity

"Saki"
Iwasaki, light manufacturer

SCWD
Switching Current Water Director, type of wave machine

SD
Southdown, type of sand

SE
Single ended, lighting designation

SG
Specific gravity

SHO
Super high output fluorescent light, equivalent to power compact fluorescent

Si
Silicon

SiO2
Silicon dioxide

SITD
Still in the dark

SO
Significant other

SPS
Small polyped Scleractinian (stoney) coral

Sr
Strontium

SW
Saltwater / seawater

TAR
Type of magnetic ballast / substance used to embed magnetic ballast coils

TBS
Tampa Bay Saltwater, mail order company

TFC
Thin film composite, type of RO membrane

TIA
Thanks in advance

TIC
Tongue in cheek

TM
Tropic Marin, manufacturer of fresh and saltwater products

TRT
The Reef Tank, aquarium bulletin board

TTYL
Talk to you later

TWP
Tap Water Purifier from Aquatic Pharmaceuticals

UGF
Undergravel filter

UV
Ultra violet, type of light of shorter wavelength than visible light

VHO
Very high output fluorescent light

W
Watts

WD ( W/D )
Wet dry, method of aquarium filtration

WPG
Watts per gallon, lighting quantity

WTF
What the F***

WTH
What the hell

WYSIWYG
What you see is what you get

X10
Automation/control products - Electronics mail order place

YMMV
Your mileage may vary

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