API NITRITE TEST KIT 180-Test Freshwater and Saltwater Aquarium Test Kit

Makes having a tank a little easier

Will buy again

I like to keep track of my Nitrates, they help me determine when a water change is needed. I think it is very accurate. I would buy again! I just fill the tube up to the measuring line with tank water, then add the drops according to the directions. You must follow the directions exactly as written. Use bottle one, then shake up bottle 2 for 30 seconds. Then add the drops and shake for 1 minute. Its a little more work then test strips, but way more accurate.

Received quickly, but although the box appeared new, there was neither a test tube nor a color chart included. I can use other tubes, ok, but how to read the result with no color chart for comparison? Had to find a picture of it online. Clearly used, returned, and sent back out again, minus those key components.

Good product. Use it daily as it tells me when a water change is needed. Have used it for years.

use it for my AP system

Kit works well.

It works.

Seems to work?

needed to maintain fish tanks