Freshwater Aquariums

		NITRITE TEST RESULTS
Disclaimer: This chart is intended as only a guideline.� Individual cases will vary based on water pH, fish species, stocking level, and other factors.




	1.00




	0.50

�Nitrite
in ppm

	0.25




	0.10




	0
		7	9	11	13	15	17	19	21	23	25	27		29	31	33	35	37
		Day of cycle

	0.1 - 0.5						0.5 - 1.0						> 1.0
	Perform 25 % water change						Perform 25-50 % water change						Perform 50 % water change
	Reduce feedings by half						Continue reduced feedings						Withold feedings until level drops
							Add 1/2 oz salt per 1 gallon water						Retest after water change, if not
							Increase aeration						below 1.0, change water again
INSTRUCTIONS
	1	Begin nitrite testing on seventh day after aqaurium has been set up, or when the ammonia begins to drop
	2	Plot test results on chart daily until values drop to zero.
	3	If results are in the shaded areas, take appropriate steps as shown.
	4	If at any time the fish show signs of distress immediately take steps shown for > 1.0

Water Changes
	When changing water remove any uneaten food and other debris.
	Water changes are the only way to reduce Nitrites. If levels are extremely high, multiple water changes
	may be necessary to bring the level to a safe range