5 in 1 Aquarium Test Strips - 25 Strips

A great way to do a quick check on your basic chemicals status in your reef tank; warning of nitrite and nitrates.

These strips DO work as advertised. Although, even though I am an experienced fish tank owner for over 13 years and have 2 65-gallon tanks, I'm still perturbed what I am supposed to do when CO2 is off.
Anyway, my major disappointment with this product is the PACKAGING! You hate a HUGE box, inside which there is a BIG cyllinder, inside which is mostly emply space and just tiny little wittle strips. Yes, I know, it's supposed to be only 25 strips. But did you have to give it such a huge packaging?
In addition, I found the PH levels in orange-spectrum colors instead of the usual yellow-to-blue spectrum, which is made it difficult to read.
Summary: inflated packaging, tiny hard-to-read test strips with confusing colors, inflated price. You'll do much better with a standard liquid testing. Hence, my rating is only 2 stars.

This is just a maintenance tool to get a FAST, general picture of your tank's health. If you suspect a problem, use additional and more specific tests.

If you have multiple tanks (I have 8), you can test the water condition in about 5 minutes. If you have more than one tank, get a few packages. Ken's prices are the best.

I was very happy with the instructions and the ease of use. These test strips work very well and are easy to read. I was shocked to see nitrates at 200! Explains why our fish kept dying. Can't wait to get our water ready so we can buy some more fish.