This item has been DISCONTINUED. Please call 1 (800) 889-8967 for availability.
Tetratest Nitrate Kit (40 pack) Nitrate is the end product of biological filtration and the result of decomposition of nitrite. It
can also be present in tap water supplies, especially in areas of high fertilizer runoff.
Nitrate testing is also an indicator of general water quality and filter function. Nitrite is
formed in the second stage of the nitrogen cycle and is harmful to aquarium fish even at
low levels. These kits are suitable for freshwater (including outdoor ponds), brackish, and