Freshwater aquarium Water parameters

Water parameters

Water parameters for a freshwater aquarium

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The right water parameters

	Elements	Parameters	Minimal	Maximal	Unit
General parameters	Acidity	pH*	6.5	8	-
	Total hardness	GH*	1	20	°dGH
	Carbonate hardness	KH	4	12	°dKH
Critical parameters	Nitrites	NO2	0,01	0,05	mg/l
	Ammonium	NH4	0	0	mg/l
	Copper	Cu	0	0	mg/l
Parameters favouring aglues	Nitrates	NO3	20	25	mg/l
	Phosphates	PO4	0.01	0.02	mg/l
	Iron	Fe	0.05	0.1	mg/l

*depending on species

Modify water parameters

Parameter	Increase	Decrease
pH	Bubbler Exhaust filter Aquadur Salts Brassage Cuttlefish bone Oyster shells Coral sand	Osmosis water Catappa leaves Alder Cones Oak leaves Peat CO2 Some types of substrates
GH	Preis Discus Salts Aquadur Salts Dennerle Salts Calcareous stones Cuttlefish bone Oyster shells	Eau osmosée
KH	Aquadur Salts Sels Dennerle Calcareous stones Cuttlefish bone	Osmosis water Peat
Nitrates (NO3)	What causes it: Population too large Overfeeding	Decrease population Decrease food intake Fast-growing plants Regular and sufficient water changes Activated carbon
Phosphates (PO4)	What causes it: Population too large Overfeeding	Decrease population Decrease food intake Fast-growing plants Regular and sufficient water changes Activated carbon Anti-phosphate filter mass

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