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I thought this would be a good addition to the site for those who haven't been around long and since it's a good resource so I stuck it here. Might be a good item to make a sticky and even link to for new users.
Popular Aquarium Acronyms
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Acronym = Definition Explanation
AC = Activated Carbon chemical filtration media
AEFW = Acro Eating Flat Worms (pest)
AGA = All-Glass Aquarium aquarium manufacturer
ALK = Alkalinity measure of buffering capacity of water
ATC = Automatic Temperature Control typically used as a Refractometer specification as salinity varies with temperature: to compensate the measurement based upon the temperature of the water.
ATS = Algae Turf Scrubber method of aquarium filtration
BAR = Bay Area Reefers local reef club of northern CA
BB = Bare Bottom aquarium without sand
BOD = Biological Oxygen Demand amount of oxygen that would be consumed if all the organics in one liter of water were oxidized by bacteria and protozoa
BRB = Be Right Back acronym of speech (online chat room use)
BTA = Bubble Tip Anemone type of anemone
BTW = By The Way acronym of speech
Ca = Periodic Table Symbol for Calcium alkaline earth metal
Ca(OH)2 = Periodic Table Symbol for Calcium Hydroxide calcium based powder used to make Kalkwasser
CC = Crushed Coral type of substrate, typically in the 1/8"-3/16" size
CC = Counter Current typically referred to a type of skimmer
CO2 = Periodic Table Symbol for Carbon Dioxide colorless gas of one carbon and two oxygen atoms
CSL = Custom Sea Life lighting manufacturer
Cu = Periodic Table Symbol for Copper reddish metallic element
CVR = Central Valley Reefers local reef club of the Central Valley, CA
Cyano = Cyanobacteria bacteria commonly referred to as slime algae
DI = Deionization type of water purification
DIY = Do It Yourself acronym of speech
DBTC = Don't Break The Chain
dKH = Degrees of Carbonate Hardness measure of alkalinity
DO = Dissolved Oxygen amount of gaseous oxygen (O2) dissolved in water
DSB = Deep Sand Bed bed of sand typically at least 3-4" or more deep
ESV = E.S.V. aquarium chemical supply company
FAQ = Frequently Asked Questions acronym of speech
FO = Fish Only reef aquaria with no corals or "live rock"
FOWLR = Fish Only With Live Rock reef aquaria with no corals but with "live rock"
FW = Freshwater referred to non-saltwater based aquariums
FWE = Flat Worm Exit (treatment)
GAC = Granular Activated Carbon chemical filtration media
GBTA = Green bubble tip anemone
GFCI = Ground Fault Circuit Interrupter AC plug designed to prevent electrical shock
GFO = granular ferric oxide
gj = Good Job acronym of speech
GPD = Gallons Per Day measurement of flow
GPH = Gallons Per Hour measurement of flow
GPM = Gallons Per Minute measurement of flow
GSP = Green Star Polyps invasive soft coral
HO = High Output type of fluorescent light
HOB = Hang On Back (of tank) typically a term for a type of skimmer
HOT = Hang On Tank relating to aquariums
HQI = Mercury (Hg) Quartz Iodide type of metal halide lamp
HTH = Hope This Helps acronym of speech
IIRC = If I recal correctly
IME = In My Experience acronym of speech
IMHO = In My Humble Opinion acronym of speech
IMO = In My Opinion acronym of speech
IO = Instant Ocean brand of aquarium salt
IR = Infrared spectrum of light
IW = In Wall a tank mounted in the wall - typically with only one viewable pane. please reference weatherson's TOTM, 3rd shot.
j/j = Just Joking acronym of speech
j/k = Just Kidding acronym of speech
Kalk = Kalkwasser German for calcium hydroxide solution or limewater
KW = Kalkwasser see Kalk above
LFS = Local Fish Store acronym of speech
LMK = Let Me Know acronym of speech
LOL = Laughing Out Loud acronym of speech
LPH = Liters Per Hour measurement of flow (metric)
LPS = Large Polyped Scleractinia type of coral by structure
LR = Live Rock rock with living organisms
LS = Live Sand sand with living organisms
LSB = Live Sand Bed sand bed with living organisms
MARS = Marine Aquarist Round Table of Sac. local reef club of Sacramento, CA
MD = Marine Depot mail order company
MEQ/L = Milli-Equivalents Per Liter measure of alkalinity
Mg = Magnesium trace mineral
MG/L = Milligrams Per Liter measurement (metric)
MH = Metal Halide type of light bulb
MO = Mail Order acronym of speech
NH3 = Periodic Table Symbol for Ammonia compound of nitrogen and hydrogen
NNR = Natural Nitrate Reduction aquarium filtration based on method by Dr. Jaubert
NO = Normal Output type of fluorescent light
NO2 = Nitrite by-product of ammonia oxidation
NO3 = Nitrate result of nitrites converted by Nitrobacter bacteria
NSW = Natural Sea Water sea or ocean water
NVR = Northern Valley Reefers local reef club of the Central Valley, CA
O2 = Oxygen colorless, tasteless, odorless gaseous element
ORA = Oceans Reefs and Aquariums company name
ORP = Oxidation Reduction Potential measure of a system's capacity to oxidize material
PA = Premium Aquatics mail order company
PC = Power Compact type of fluorescent light
PE = Polyp Extension referred to corals
PH = Powerhead internal water pump
pH = Potenz (power) Hydrogen or Potential Hydrogen measure of acidity and alkalinity
PO4 = Phosphate aquarium algae food
pods = copepods quoted from Dr. Adelaide Rhodes' site, "Copepods are crustaceans which are found in freshwater and marine environments."
PPM = Parts Per Million measurement
PPT = Parts Per Thousand measurement
PS = Protein Skimmer device used to remove proteins from saltwater
PVC = Poly Vinyl Chloride parts used for plumbing
QT = Quarantine
RBTA = Rose bubble tip anemone
RC = Reef Central aquaria related internet bulletin board
RC = Reef Crystals brand of aquarium salt
RCB = Remote sand bed
RK = Reef Keeping on-line aquarium magazine
RO = Reverse osmosis type of water purification
RO/DI = Reverse Osmosis/ Deionization combination of type of water purification
ROFL = Rolling On The Floor Laughing acronym of speech
ROTFLMAO = Rolling On The Floor Laughing My A$$ Off acronym of speech
RR = Reef Ready aquarium with overflows and pre-drilled holes
RS = Red Sea brand name
RTN = Rapid Tissue Necrosis protozoa infection of corals
SEABay = Saltwater Enthusiast Association of the Bay Area local reef club of northern CA
SG = Specific Gravity measurement of saltwater density
SPS = Small Polyped Scleractinia stony coral
SSB = Shallow Sand Bed bed of sand typically less than 3" deep
STN = Slow Tissue Necrosis protozoa infection of corals
SW = Saltwater sea or ocean water
T5 = 5/8" tube diameter fluorescent light
TBS = Tampa Bay Saltwater mail order company
TDS = Total Dissolved Solids portion of solids in water that can pass through a 2 micron filter
TFC = Thin Film Composite type of RO membrane
thx = Thanks acronym of speech
TTYL = Talk To You Later acronym of speech
UGF = Under Gravel Filter method of aquarium filtration
UV = Ultra Violet spectrum of light
VHO = Very High Output type of fluorescent light
W = Watts unit of power
WD = Wet-dry method of aquarium filtration
WPG = Watts Per Gallon inaccurate method of measuring lighting requirements
WQ = Water Quality degree of water purity
--------------------------------------------------------------------------------
3-11 Added RSD, DBTC and GFO
Popular Aquarium Acronyms
-------------------------------------------------------------------------------
Acronym = Definition Explanation
AC = Activated Carbon chemical filtration media
AEFW = Acro Eating Flat Worms (pest)
AGA = All-Glass Aquarium aquarium manufacturer
ALK = Alkalinity measure of buffering capacity of water
ATC = Automatic Temperature Control typically used as a Refractometer specification as salinity varies with temperature: to compensate the measurement based upon the temperature of the water.
ATS = Algae Turf Scrubber method of aquarium filtration
BAR = Bay Area Reefers local reef club of northern CA
BB = Bare Bottom aquarium without sand
BOD = Biological Oxygen Demand amount of oxygen that would be consumed if all the organics in one liter of water were oxidized by bacteria and protozoa
BRB = Be Right Back acronym of speech (online chat room use)
BTA = Bubble Tip Anemone type of anemone
BTW = By The Way acronym of speech
Ca = Periodic Table Symbol for Calcium alkaline earth metal
Ca(OH)2 = Periodic Table Symbol for Calcium Hydroxide calcium based powder used to make Kalkwasser
CC = Crushed Coral type of substrate, typically in the 1/8"-3/16" size
CC = Counter Current typically referred to a type of skimmer
CO2 = Periodic Table Symbol for Carbon Dioxide colorless gas of one carbon and two oxygen atoms
CSL = Custom Sea Life lighting manufacturer
Cu = Periodic Table Symbol for Copper reddish metallic element
CVR = Central Valley Reefers local reef club of the Central Valley, CA
Cyano = Cyanobacteria bacteria commonly referred to as slime algae
DI = Deionization type of water purification
DIY = Do It Yourself acronym of speech
DBTC = Don't Break The Chain
dKH = Degrees of Carbonate Hardness measure of alkalinity
DO = Dissolved Oxygen amount of gaseous oxygen (O2) dissolved in water
DSB = Deep Sand Bed bed of sand typically at least 3-4" or more deep
ESV = E.S.V. aquarium chemical supply company
FAQ = Frequently Asked Questions acronym of speech
FO = Fish Only reef aquaria with no corals or "live rock"
FOWLR = Fish Only With Live Rock reef aquaria with no corals but with "live rock"
FW = Freshwater referred to non-saltwater based aquariums
FWE = Flat Worm Exit (treatment)
GAC = Granular Activated Carbon chemical filtration media
GBTA = Green bubble tip anemone
GFCI = Ground Fault Circuit Interrupter AC plug designed to prevent electrical shock
GFO = granular ferric oxide
gj = Good Job acronym of speech
GPD = Gallons Per Day measurement of flow
GPH = Gallons Per Hour measurement of flow
GPM = Gallons Per Minute measurement of flow
GSP = Green Star Polyps invasive soft coral
HO = High Output type of fluorescent light
HOB = Hang On Back (of tank) typically a term for a type of skimmer
HOT = Hang On Tank relating to aquariums
HQI = Mercury (Hg) Quartz Iodide type of metal halide lamp
HTH = Hope This Helps acronym of speech
IIRC = If I recal correctly
IME = In My Experience acronym of speech
IMHO = In My Humble Opinion acronym of speech
IMO = In My Opinion acronym of speech
IO = Instant Ocean brand of aquarium salt
IR = Infrared spectrum of light
IW = In Wall a tank mounted in the wall - typically with only one viewable pane. please reference weatherson's TOTM, 3rd shot.
j/j = Just Joking acronym of speech
j/k = Just Kidding acronym of speech
Kalk = Kalkwasser German for calcium hydroxide solution or limewater
KW = Kalkwasser see Kalk above
LFS = Local Fish Store acronym of speech
LMK = Let Me Know acronym of speech
LOL = Laughing Out Loud acronym of speech
LPH = Liters Per Hour measurement of flow (metric)
LPS = Large Polyped Scleractinia type of coral by structure
LR = Live Rock rock with living organisms
LS = Live Sand sand with living organisms
LSB = Live Sand Bed sand bed with living organisms
MARS = Marine Aquarist Round Table of Sac. local reef club of Sacramento, CA
MD = Marine Depot mail order company
MEQ/L = Milli-Equivalents Per Liter measure of alkalinity
Mg = Magnesium trace mineral
MG/L = Milligrams Per Liter measurement (metric)
MH = Metal Halide type of light bulb
MO = Mail Order acronym of speech
NH3 = Periodic Table Symbol for Ammonia compound of nitrogen and hydrogen
NNR = Natural Nitrate Reduction aquarium filtration based on method by Dr. Jaubert
NO = Normal Output type of fluorescent light
NO2 = Nitrite by-product of ammonia oxidation
NO3 = Nitrate result of nitrites converted by Nitrobacter bacteria
NSW = Natural Sea Water sea or ocean water
NVR = Northern Valley Reefers local reef club of the Central Valley, CA
O2 = Oxygen colorless, tasteless, odorless gaseous element
ORA = Oceans Reefs and Aquariums company name
ORP = Oxidation Reduction Potential measure of a system's capacity to oxidize material
PA = Premium Aquatics mail order company
PC = Power Compact type of fluorescent light
PE = Polyp Extension referred to corals
PH = Powerhead internal water pump
pH = Potenz (power) Hydrogen or Potential Hydrogen measure of acidity and alkalinity
PO4 = Phosphate aquarium algae food
pods = copepods quoted from Dr. Adelaide Rhodes' site, "Copepods are crustaceans which are found in freshwater and marine environments."
PPM = Parts Per Million measurement
PPT = Parts Per Thousand measurement
PS = Protein Skimmer device used to remove proteins from saltwater
PVC = Poly Vinyl Chloride parts used for plumbing
QT = Quarantine
RBTA = Rose bubble tip anemone
RC = Reef Central aquaria related internet bulletin board
RC = Reef Crystals brand of aquarium salt
RCB = Remote sand bed
RK = Reef Keeping on-line aquarium magazine
RO = Reverse osmosis type of water purification
RO/DI = Reverse Osmosis/ Deionization combination of type of water purification
ROFL = Rolling On The Floor Laughing acronym of speech
ROTFLMAO = Rolling On The Floor Laughing My A$$ Off acronym of speech
RR = Reef Ready aquarium with overflows and pre-drilled holes
RS = Red Sea brand name
RTN = Rapid Tissue Necrosis protozoa infection of corals
SEABay = Saltwater Enthusiast Association of the Bay Area local reef club of northern CA
SG = Specific Gravity measurement of saltwater density
SPS = Small Polyped Scleractinia stony coral
SSB = Shallow Sand Bed bed of sand typically less than 3" deep
STN = Slow Tissue Necrosis protozoa infection of corals
SW = Saltwater sea or ocean water
T5 = 5/8" tube diameter fluorescent light
TBS = Tampa Bay Saltwater mail order company
TDS = Total Dissolved Solids portion of solids in water that can pass through a 2 micron filter
TFC = Thin Film Composite type of RO membrane
thx = Thanks acronym of speech
TTYL = Talk To You Later acronym of speech
UGF = Under Gravel Filter method of aquarium filtration
UV = Ultra Violet spectrum of light
VHO = Very High Output type of fluorescent light
W = Watts unit of power
WD = Wet-dry method of aquarium filtration
WPG = Watts Per Gallon inaccurate method of measuring lighting requirements
WQ = Water Quality degree of water purity
--------------------------------------------------------------------------------
3-11 Added RSD, DBTC and GFO
