API - Nitrate Test Kit - 90 Tests Brand_Poly-Bio-Marine use at recommended dosage twice

use at recommended dosage twice a week

Consult your health care professional before taking this product if you are taking any drug that effects blood coagulation or blood pressure such as prescription vitamin K

Check first finger after 15 minutes

According to statistics

Servings per Container: 40 Ingredients: Amount Per Serving % Daily Value* L-Tryptophan 1

API - Nitrate Test Kit - 90 Tests Brand_Poly-Bio-Marine use at recommended dosage twiceDESCRIPTION High nitrate levels in your aquarium indicate a build up of fish waste and organic compounds, resulting in poor water quality and an increase in algae growth. Contrarily, maintaining a low nitrate level improves the health of fish and invertebrates. Use the API Nitrate Test Kit to ensure that the nitrate levels in your tank are safe and healthy for your fish. The Nitrate Test Kit reads parameters from 0 to 160 ppm, and contains 2 bottles