$13.99

The API (Aquarium Pharmaceuticals) Nitrite Test Kit is a liquid test kit used in both freshwater and saltwater aquariums to measure nitrite (NO₂⁻) levels in the water. Nitrite is one...

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Strictly Fish Miami
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The API (Aquarium Pharmaceuticals) Nitrite Test Kit is a liquid test kit used in both freshwater and saltwater aquariums to measure nitrite (NO₂⁻) levels in the water.

Nitrite is one of the most important parameters to monitor during the nitrogen cycle because it’s toxic to fish and invertebrates even at low levels.

What it does

  • Measures nitrite concentration in aquarium water
  • Helps track tank cycling progress
  • Identifies dangerous spikes during fish-in cycles or system crashes

Range & accuracy

  • Typically reads from 0 to ~5 ppm (mg/L)
  • Color chart-based comparison (pink/purple scale)
  • Designed for hobby-level but reliable reef/freshwater monitoring
Parameter Min Max
Salinity 1.024 1.026
Calcium 400 480
Alkalinity 7 9
Phosphates 0.01 0.03
Nitrates 0 20PPM
Nitrites Undetectable  
Ammonia Undetectable  

FedEx Priority Overnight shipping costs 

ORDER VALUE

FLORIDA

OUT OF STATE 

under $299

$29.99

$39.99

over $299

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We currently don't ship to Alaska, Hawaii, Puerto Rico or outside the continental US
*Excluding taxes

 

 
HOW WE SHIP
  • - All orders are shipped via FedEx Priority Overnight
  • - Double bagged in 3 mil bags
  • - Each box is prepared with a bag liner to prevent leaking
  • - All destination temperatures are checked prior to shipping to determine whether or not a heat pack or ice pack* is required
  • *Ice packs may melt prior to delivery. This will not cause any damage to your livestock order.

 

Nitrite Test Kit

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