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· Registered
2,499 Posts
Discussion Starter · #1 · (Edited)
This list was created by a member that asked to remain anonymous. It is grouped in a manner that made sense to that person. Thanks to you know who you are for compiling this list for all to use.

Please PM me with any abbreviations you find that you would like to see added.

Some commonly encountered symbols, acronyms, and abbreviations in the hobby. The electronic charges of some species have been omitted.

AB - AquaBotanic
ADA - Aqua Design Amano
ADG - Aquarium Design Group
AGA - Aquatic Gardeners Association
AGA - All Glass Aquarium
APD - Aquatic Plant Digest
PT - Planted Tank
TAG - The Aquatic Gardener - Publication of the Aquatic Gardeners Assoc. (AGA)


HC - Hemianthus callitrichoides


B - Boron
H3BO3 - Boric acid

C - Carbon
CO2 - Carbon Dioxide
CO3- - Carbonate ion
HCO3- - Bicarbonate ion

Ca - Calcium
Ca2+ - Calcium ion
CaCl2 - Calcium chloride
CaCO3 - Calcium Carbonate
CaMg(CO3)2 - Calcium Magnesium Carbonate (Dolomite)

Cl - Chlorine
Cl2 - Chlorine gas
Cl- - Chloride ion

Cu - Copper

Fe - Iron
Fe2+ - Ferric iron
Fe3+ - Ferrous iron
FeEDTA, FeEDDHA, FeDPTA - Chelated iron

H - Hydrogen
H+ - Hydrogen ion
H3O+ - Hydronium ion
H2O - Dihygrogen Monoxide (Water)
H2O2 - Hydrogen Peroxide
HCl - Hydrochloric Acid (Muriatic Acid)

K - Potassium
K+ - Potassium ion
K2SO4 - Potassium Sulfate
KCl - Potassium Chloride (Muriate of Potash)

Mg - Magnesium
Mg2+ - Magnesium ion
MgSO4 - Magnesium Sulfate
MgSO4.7H2O - Magnesium Sulfate Heptahydrate (Epsom Salt)

Mn - Manganese

Na - Sodium
NaCl - Sodium Chloride
NaHCO3 - Sodium Bicarbonate (Baking Soda)

N - Nitrogen
KNO3 - Potassium Nitrate
NH3 - Ammonia
NH4 - Ammonium
NO2 - Nitrite
NO3 - Nitrate

O - Oxygen
O2 - Oxygen gas
O3 - Ozone

P - Phosphorus
PO4 - Phosphate
KHPO4 - Potassium Dibasic Phosphate
KH2PO4 - Potassium Monobasic Phosphate

S - Sulfur

Zn - Zinc


NPK - Nitrogen, Phosphorus, Potassium

KH - Carbonate Hardness (the measure of the concentrations of CO3- and HCO3-)
GH - General Hardness or Total Hardness (the measure of the concentrations of primarily Ca2+ and Mg2+)

[x] - Concentration of x, where x can be anything
mg/l - milligram per liter (same as ppm)
ppm - part per million (same as mg/l)
ppb - part per billion
WPG - Watt Per Gallon
ml - milliliter
tbs - tablespoon
tsp - teaspoon
bpm - bubble per minute
pH - the negative log of [H+] (measure of acidity/alkalinity)


BBA - Black Brush Algae
BGA - Blue Green Algae


MTS - Malaysian Trumpet Snail
SAE - Siamese Algae Eater

RO - Reverse Osmosis
DI - Deionized, ion exchanger unit
CF - Compact Fluorescent
LED - Light Emitting Diode
MTBF - Mean Time Before Failure or the avg of how long the bulb lasts till it blows
MH - Metal Halide

PMDD - Poor Man Dupla Drops
PPS - Perpetual Preservation System
SS - Standard Solution PPS
PF - PO4-free Solution PPS
NF - NO3-free Solution PPS
TDS - Total Dissolved Solids meased in ppm, also known as uS
TMG - Tropica Master Grow
uS - Mirco Seimens another way to measure TDS

AFAIK - As Far As I Know
AKA - Also Known As
APD - Aquatic Plant Digest
BTW - By The Way
DIY - Do It Yourself
FYI - For Your Information
IME - In My Experience
IMO - In My Opinion
IMHO - In My Humble Opinion
IMVHO - In My Very Humble Opinion
LFS - Local Fish Store
OTOH - On The Other Hand
WTB - Want To Buy
WTS - Want To Sell
WTT - Want To Trade
YMMV - Your Mileage May Vary

· Registered
2,253 Posts
pardalisjk said:
I see '&amp' used in a few posts. What's that?
That's a problem with the web site showing you the 'and' sign. Because it is used in coding it has to have some extra stuff & it doesn't always come through clean.

· Registered
20 Posts
the list frightens and confuses me.

· Registered
3,252 Posts
Aqua Designs Amano- the aquarium supply company started by Takishi Amano. ADA products are very high end and focus on th eplanted aspect of the hobby. In the US, ADA products can be found through AGD is a sponsor of our site and a very talented pair of brothers with extreme aquascaping prowess.

Do a search here or on Google for Takishi Amano. There is enoug hmaterial out threre about him to keep you busy for a while;)

welcome to APC!

· Registered
473 Posts
HC is Hemianthus callitrichoides.

I wish this bad habit of extreme shorthanding of plant names would stop. It's fine to use HC if the poster first writes the full name of the plant somewhere in his/her post. Otherwise, it's just poor etiquette IMO. :ranger:
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