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Freshwater Parameters
The following chart is a
general guideline of acceptable water parameter ranges for different
types of freshwater aquariums, brackish water aquariums, and ponds.
The water parameters listed are a general guideline for maintaining
each specific type of aquarium or pond. Some species of fish,
plants, or invertebrates may have more specific requirements, so
please review each individual species description for more
information.
|
Parameter |
Freshwater Community |
African Cichlid |
Freshwater Plants
&
Discus |
Brackish |
Pond |
|
Temperature |
72 - 82°F |
72 - 82°F |
76 - 86°F |
72 - 82°F |
33 - 86°F |
|
pH |
6.5 - 7.5 |
7.8 - 8.5 |
6.0 - 7.5 |
7.5 - 8.4 |
6.5 - 7.5 |
|
Ammonia |
0.0 |
0.0 |
0.0 |
0.0 |
0.0 |
|
Nitrite |
0.0 |
0.0 |
0.0 |
0.0 |
0.0 |
|
Nitrate |
< 50 ppm |
< 50 ppm |
< 30 ppm |
< 50 ppm |
< 50 ppm |
|
Alkalinity (Carbonate Hardness) |
4 - 8 KH |
10 - 18
KH |
3 - 8 KH |
10 - 18
KH |
4 - 8 KH |
|
General Hardness |
4 - 12 GH |
12 - 20
GH |
3 - 8 GH |
12 - 20
GH |
4 - 12 GH |
Marine Parameters
The following chart is a general guideline of
acceptable water parameter ranges for different types of tropical
marine aquariums. Some types of displays such as FOWLR (Fish Only
With Live Rock) aquariums have a broader range of parameters than a
reef aquarium. This is due to the delicate nature of corals and
invertebrates that are commonly maintained in a reef aquarium. Some
species of fish, plants, or invertebrates may have special
requirements, so please review each individual species description
for more specific information. For reference we have also provided
the average water conditions measured on tropical coral reefs across
the world.
|
Parameter |
Suggested Level:
Reef Aquarium |
Suggested Level:
FOWLR Aquarium |
Average Level:
Coral Reefs |
|
Specific Gravity |
1.023 -
1.025 |
1.020 -
1.025 |
1.025 |
|
Temperature |
72 - 78°F |
72 - 78°F |
82°F |
| pH |
8.1 - 8.4 |
8.1 - 8.4 |
8.0 - 8.5 |
|
Alkalinity |
8 - 12 dKH |
8 - 12 dKH |
6 - 8 dKH |
|
Ammonia (NH3) |
Undetectable |
Undetectable |
Near Zero |
|
Nitrite (NO2) |
Undetectable |
Undetectable |
Near Zero |
|
Nitrate - Nitrogen (NO3) |
< 1.0 ppm |
< 30 ppm |
0.25 ppm |
|
Phosphate (PO4) |
< 0.2 ppm |
< 1.0 ppm |
0.13 ppm |
|
Calcium |
350 - 450
ppm |
350 - 450
ppm |
380 - 420
ppm |
|
Magnesium |
1250 - 1350
ppm |
1150 - 1350
ppm |
1300 ppm |
|
Iodine |
0.06 - 0.10
ppm |
0.04 - 0.10
ppm |
0.06 ppm |
|
Strontium |
8 - 14 ppm |
4 - 10 ppm |
8 - 10 ppm |
|
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