Here is a compilation of acronyms that I have compiled over the years.
A=Amp
AA=Amino Acid
AC=Activated Carbon
AC=Alternating Current
Acan Lord=Acanthastrea
AEFW=Acro Eating Flat Worms
AFAIK = As far as I know
AFM=Aquarium Fish Monthly, magazine
AGA=All-Glass Aquarium
AGE=Acrylic and Glass Exhibits
Alk=Alkalinity
Amp=Measure of electron movement in a circuit
ASW=Artificial Sea Water
ATC=Automatic Temperature Control
ATO=Auto Top Off
ATS=Algae Turf Scrubber
AZA=Association of Zoos & Aquariums
BB=Bare Bottom
Blasto=Blastomussa
BOD=Biological Oxygen Demand
BTA=Bubble Tipped Anemone
BTU=British Thermal Unit
BTW=By The Way
Ca=Calcium
CBB=Copper Band Butterfly
CC=Counter Current (type of protein skimmer)
CC=Crushed Coral
CFL=Compact Fluorescent Lamp
CL=Closed Loop
CO2=Carbon Dioxide
CSL=Custom Sea Life
CTA=Cellulose Ariacetate
C2C=Coast To Coast
Cu=Copper
CUC=Clean Up Crew
CWCS=Continuous Water Change System
Cyano=Cyanobacteria
DAMHIKT=Don't Ask Me How I Know This
DC=Direct Current
DD=Downdraft (type of protein skimmer)
DE=Double Ended
DFS=Drs. Foster and Smith
DI=De-ionization
DIY=Do It Yourself
dKh=German Degrees of Hardness
DO=Dissolved Oxygen
DOC=Dissolved Organic Carbon
DP=Double Post
DT=Display Tank
DSB=Deep Sand Bed
EB=Electronic Ballast
ETA=Estimated Time of Arrival.
FAMA=Freshwater And Marine Aquaria (magazine)
FAQ=Frequently Asked Questions
FO=Fish Only
FOWLR=Fish Only With Live Rock
FTFY=Fixed That For You
FTS=Full Tank Shot
FW=Flat Worm
FW=Freshwater
FWIW=For What It's Worth
FWE=Flat Worm Exit
GAC=Granular Activated Carbon
GBR=Great Barrier Reef
GBTA=Green Bubble Tip Anemone
GFCI=Ground Fault Circuit Interrupter
GFI=Ground Fault Interrupter
GFO=Granular Ferric Oxide
GHA=Green Hair Algae
GPD=Gallons Per Day
GPH=Gallons Per Hour
GSM=Gold Striped Maroon
GSP=Green Star Polyps
HA=Hair Algae
HD=Home Depot
HO=High Output (fluorescent light)
HOB=Hang On Back
HOT=Hang On Tank
HTH=Hope This Helps
HQI=Mercury (Hg) Quartz Iodide
IA=Inland Aquatics
IBTL=In Before The Lock
IIRC=If I Recall Correctly
IME=In My Experience
IMHO=In My Humble Opinion
IMNSHO=In My Not So Humble Opinion
IMO=In My Opinion
IO=Instant Ocean
IR=Infrared
IW=In Wall
JJ=Just Joking
JK=Just Kidding
JM2C=Just My 2 Cents
K=Kelvin (Lighting) 10,000K
Kalk=Kalkwasser (limewater)
KISS=Keep It Simple Stupid
kWh=Kilowatt-Hour
L=Liters
LA=Live Aquaria
LA3/L3=LumenArc 3
lbs=Pounds
LED=Light Emitting Diode
LFS=Local Fish Store
LHS=Local Hardware Store
LMB=Lawn Mower Blenny
LMK=Let Me Know
Lobo=Lobophyllia
LOL=Laugh Out Loud
LPH=Liters Per Hour
LPS=Large Polyped Scleractinian (Stony) coral
LRB=Little Red Bugs
LR=Live Rock
LS=Live Sand
LTA=Long Tentacle Anemone
MACNA=Marine Aquaria Conference of North America, held annually
MASNA=Marine Aquarium Societies of North America
MASVC=Marine Aquarium Society of Ventura County
MB=Magnetic Ballast
MD=Marine Depot
meq/L=Micro-equalities per Liter
Mg or Mag=Magnesium
MH=Metal Halide light
Milli=Millipora
MJ=Maxijet
MM=Miracle Mud
MO=Mail Order
NH3=Ammonia
NNR=Natural Nitrate Reduction
NO=Normal Output (fluorescent light)
NO2=Nitrite
NO3=Nitrate
NPS=Non Photosynthetic
NSW=Natural Sea Water
NTS=New Tank Syndrome
NTTH=New To The Hobby
O2=Oxygen
OM=Ocean Motions (4 way pump)
OP=Original Poster
ORP=Oxygen Redox Potential
OTS=Old Tank Syndrome
PA=Premium Aquatics
PAR=Photosynthetic Active Radiation
PB=Pulse Ballast
PBITAWA=Pour Bleach In Tank And Walk Away
PBT=Powder Blue Tang
PC=Power Compact (fluorescent light)
PE=Polyp Extension
PH=Powerhead
PITA=Pain In The Ass
PM=Private Message
P04=Phosphate
PPM=Parts Per Million
PPT=Parts Per Thousand
PS=Protein Skimmer
PVC=Poly Vinyl Chloride
QT=Quarantine Tank
RB=Red Bugs
RBTA=Rose Bubble Tipped Anemone
RC=Reef Central
RC=Reef Crystals
RDSB=Remote Deep Sand Bed
Rics=Ricordia
RO=Reverse Osmosis
RODI=Reverse Osmosis, Deionization
ROFLMAO=Roll On Floor Laugh My A** Off
RR=Reef Ready, (aquaria with pre-drilled holes and overflows)
RSM=Red Slime Remover
RTN=Rapid Tissue Necrosis
RUGF=Reverse Under Gravel Filter
SCWD=Switching Current Water Director
SE=Single Ended
SG=Specific Gravity
Shrooms=Mushrooms
SPS=Small Polyped Scleractinian (Stony) coral
SSB=Shallow Sand Bed
Sticky=Always on top forum thread that does not expire
STN=Slow Tissue Necrosis
SW=Salt Water / Sea Water
TBH=To Be Honest
TBS=Tampa Bay Saltwater
TDS=Total Dissolved Solids
TFC=Thin Film Composite, type of RO membrane
TIA=Thanks In Advance
TIC=Total Inorganic Carbon
TOC=Total Organic Carbon
Trachy=Trachyphyllia
TTT=To The Top
TWP=Tap Water Purifier (from Aquatic Pharmaceuticals)
UGF=Under Gravel Filter
ULNS=Ultra Low Nutrient System
UV=Ultra Violet
V=Volt
VHO=Very High Output (fluorescent light)
VSV=Vodka Sugar Vinegar
W=Watts
WC=Water Change
WD=Wet-Dry (a method of aquarium filtration)
Wellso=Wellsophyllia
WNL=Within Normal Limits
WPG=Watts Per Gallon
WTB=Want To Buy
WTS=Want To Sell
WTT=Want To Trade
WQ=Water Quality
WYSIWYG=What You See Is What You Get
YGM=You Got Mail
YGPM=You've Got Private Message
YMMV=Your Mileage May Vary (your specific results may vary from mine)
YWG=Yellow Watchman Goby
A=Amp
AA=Amino Acid
AC=Activated Carbon
AC=Alternating Current
Acan Lord=Acanthastrea
AEFW=Acro Eating Flat Worms
AFAIK = As far as I know
AFM=Aquarium Fish Monthly, magazine
AGA=All-Glass Aquarium
AGE=Acrylic and Glass Exhibits
Alk=Alkalinity
Amp=Measure of electron movement in a circuit
ASW=Artificial Sea Water
ATC=Automatic Temperature Control
ATO=Auto Top Off
ATS=Algae Turf Scrubber
AZA=Association of Zoos & Aquariums
BB=Bare Bottom
Blasto=Blastomussa
BOD=Biological Oxygen Demand
BTA=Bubble Tipped Anemone
BTU=British Thermal Unit
BTW=By The Way
Ca=Calcium
CBB=Copper Band Butterfly
CC=Counter Current (type of protein skimmer)
CC=Crushed Coral
CFL=Compact Fluorescent Lamp
CL=Closed Loop
CO2=Carbon Dioxide
CSL=Custom Sea Life
CTA=Cellulose Ariacetate
C2C=Coast To Coast
Cu=Copper
CUC=Clean Up Crew
CWCS=Continuous Water Change System
Cyano=Cyanobacteria
DAMHIKT=Don't Ask Me How I Know This
DC=Direct Current
DD=Downdraft (type of protein skimmer)
DE=Double Ended
DFS=Drs. Foster and Smith
DI=De-ionization
DIY=Do It Yourself
dKh=German Degrees of Hardness
DO=Dissolved Oxygen
DOC=Dissolved Organic Carbon
DP=Double Post
DT=Display Tank
DSB=Deep Sand Bed
EB=Electronic Ballast
ETA=Estimated Time of Arrival.
FAMA=Freshwater And Marine Aquaria (magazine)
FAQ=Frequently Asked Questions
FO=Fish Only
FOWLR=Fish Only With Live Rock
FTFY=Fixed That For You
FTS=Full Tank Shot
FW=Flat Worm
FW=Freshwater
FWIW=For What It's Worth
FWE=Flat Worm Exit
GAC=Granular Activated Carbon
GBR=Great Barrier Reef
GBTA=Green Bubble Tip Anemone
GFCI=Ground Fault Circuit Interrupter
GFI=Ground Fault Interrupter
GFO=Granular Ferric Oxide
GHA=Green Hair Algae
GPD=Gallons Per Day
GPH=Gallons Per Hour
GSM=Gold Striped Maroon
GSP=Green Star Polyps
HA=Hair Algae
HD=Home Depot
HO=High Output (fluorescent light)
HOB=Hang On Back
HOT=Hang On Tank
HTH=Hope This Helps
HQI=Mercury (Hg) Quartz Iodide
IA=Inland Aquatics
IBTL=In Before The Lock
IIRC=If I Recall Correctly
IME=In My Experience
IMHO=In My Humble Opinion
IMNSHO=In My Not So Humble Opinion
IMO=In My Opinion
IO=Instant Ocean
IR=Infrared
IW=In Wall
JJ=Just Joking
JK=Just Kidding
JM2C=Just My 2 Cents
K=Kelvin (Lighting) 10,000K
Kalk=Kalkwasser (limewater)
KISS=Keep It Simple Stupid
kWh=Kilowatt-Hour
L=Liters
LA=Live Aquaria
LA3/L3=LumenArc 3
lbs=Pounds
LED=Light Emitting Diode
LFS=Local Fish Store
LHS=Local Hardware Store
LMB=Lawn Mower Blenny
LMK=Let Me Know
Lobo=Lobophyllia
LOL=Laugh Out Loud
LPH=Liters Per Hour
LPS=Large Polyped Scleractinian (Stony) coral
LRB=Little Red Bugs
LR=Live Rock
LS=Live Sand
LTA=Long Tentacle Anemone
MACNA=Marine Aquaria Conference of North America, held annually
MASNA=Marine Aquarium Societies of North America
MASVC=Marine Aquarium Society of Ventura County
MB=Magnetic Ballast
MD=Marine Depot
meq/L=Micro-equalities per Liter
Mg or Mag=Magnesium
MH=Metal Halide light
Milli=Millipora
MJ=Maxijet
MM=Miracle Mud
MO=Mail Order
NH3=Ammonia
NNR=Natural Nitrate Reduction
NO=Normal Output (fluorescent light)
NO2=Nitrite
NO3=Nitrate
NPS=Non Photosynthetic
NSW=Natural Sea Water
NTS=New Tank Syndrome
NTTH=New To The Hobby
O2=Oxygen
OM=Ocean Motions (4 way pump)
OP=Original Poster
ORP=Oxygen Redox Potential
OTS=Old Tank Syndrome
PA=Premium Aquatics
PAR=Photosynthetic Active Radiation
PB=Pulse Ballast
PBITAWA=Pour Bleach In Tank And Walk Away
PBT=Powder Blue Tang
PC=Power Compact (fluorescent light)
PE=Polyp Extension
PH=Powerhead
PITA=Pain In The Ass
PM=Private Message
P04=Phosphate
PPM=Parts Per Million
PPT=Parts Per Thousand
PS=Protein Skimmer
PVC=Poly Vinyl Chloride
QT=Quarantine Tank
RB=Red Bugs
RBTA=Rose Bubble Tipped Anemone
RC=Reef Central
RC=Reef Crystals
RDSB=Remote Deep Sand Bed
Rics=Ricordia
RO=Reverse Osmosis
RODI=Reverse Osmosis, Deionization
ROFLMAO=Roll On Floor Laugh My A** Off
RR=Reef Ready, (aquaria with pre-drilled holes and overflows)
RSM=Red Slime Remover
RTN=Rapid Tissue Necrosis
RUGF=Reverse Under Gravel Filter
SCWD=Switching Current Water Director
SE=Single Ended
SG=Specific Gravity
Shrooms=Mushrooms
SPS=Small Polyped Scleractinian (Stony) coral
SSB=Shallow Sand Bed
Sticky=Always on top forum thread that does not expire
STN=Slow Tissue Necrosis
SW=Salt Water / Sea Water
TBH=To Be Honest
TBS=Tampa Bay Saltwater
TDS=Total Dissolved Solids
TFC=Thin Film Composite, type of RO membrane
TIA=Thanks In Advance
TIC=Total Inorganic Carbon
TOC=Total Organic Carbon
Trachy=Trachyphyllia
TTT=To The Top
TWP=Tap Water Purifier (from Aquatic Pharmaceuticals)
UGF=Under Gravel Filter
ULNS=Ultra Low Nutrient System
UV=Ultra Violet
V=Volt
VHO=Very High Output (fluorescent light)
VSV=Vodka Sugar Vinegar
W=Watts
WC=Water Change
WD=Wet-Dry (a method of aquarium filtration)
Wellso=Wellsophyllia
WNL=Within Normal Limits
WPG=Watts Per Gallon
WTB=Want To Buy
WTS=Want To Sell
WTT=Want To Trade
WQ=Water Quality
WYSIWYG=What You See Is What You Get
YGM=You Got Mail
YGPM=You've Got Private Message
YMMV=Your Mileage May Vary (your specific results may vary from mine)
YWG=Yellow Watchman Goby
