Hanna Glass Cuvettes and Caps for Checker Colorimeters Set of 2 (HI731315) then tank is not yet

then tank is not yet fully cycled and you should not add fish

In your main tank

Use at start-up and whenever adding or replacing water

and other photosynthetic animals

Hanna Glass Cuvettes and Caps for Checker Colorimeters Set of 2 (HI731315) then tank is not yetThe HI731315 are spare glass cuvettes and plastic caps used with the HI7XX Checker HC colorimeters. Each cuvette has a 10 ml level mark to measure the appropriate volume. The HI731315 includes 2 cuvettes and 2 caps. 10 ml level mark for adding correct volume. Test more samples and average your results for the best accuracy. Perfect for replacing scratched or discolored cuvettes.