NT Labs Phosphate Test

NT Labs Phosphate Test

The NT Labs Phosphate Test is an essential tool for any aquarist looking to maintain a healthy, algae-free aquarium. Phosphate is a natural nutrient found in fish food and organic matter, but when it builds up in excess, it can fuel the growth of nuisance algae and disrupt your tank’s mineral balance. While small amounts are necessary—especially for the growth of aquatic plants—levels should be kept between 0 and 0.25 mg/L PO₄-P.

Using the NT Labs Phosphate Test, you can easily monitor phosphate levels and take action before they become a problem. Elevated readings can usually be corrected with regular partial water changes using dechlorinated tap water, though it’s important to check that your tap water isn’t introducing phosphate into the tank. For persistent issues, products like Aquarium Phosphate Remover or Algae Gone can help reduce and control phosphate levels effectively.

Performing the test is simple and straightforward. After collecting a 5 ml water sample in the clean test tube, add 5 drops of the reagent, cap the tube, and gently mix. Let it develop for 5 minutes, then compare the resulting colour to the chart provided. The NT Labs Phosphate Test delivers fast, reliable results, making it a valuable addition to your aquarium care toolkit.

View our other NT Labs products here.

McMerwe’s comments: We recommend the NT Labs Phosphate Test to help keep algae under control and your water parameters balanced. It’s easy to use and gives quick, accurate results—perfect for spotting phosphate issues before they affect your tank. A great tool for both planted and fish-only setups. [Rating: 5/5]