7-Way Aquarium Test Strips, 100 Strips Aquarium Testing Kit for Freshwater, Fish Tank Pond Test Strips Testing pH, Alkalinity, Nitrite, Nitrate, Chlorine, Carbonate, Hardness

Simple to get results. I use it in my aquarium and my small pond

Easy to read and great price for the quality

These test strips are useful for making a quick evaluation of your tank to ensure nothing is seriously wrong. The API test kits showed the following for a tank halfway cycled:- pH 7.0- Ammonia 0ppm- Nitrite 5ppm- Nitrate 20ppm- GH 12dgh (215mg)- KH 2dkh (36mg)The test strip (bottom strip in photo) showed:- pH 6.4- Ammonia not tested- Nitrite 5ppm- Nitrate 25ppm- GH 300mg/L- KH 0mg/LKeep in mind that API kits measure GH and KH in degrees, while these strips measure mg/L. One degree of hardness is approximately 17.9mg/L, meaning API said my GH is 215mg/L and KH is 36mg/L. Unless I'm colorblind or doing something wrong, GH should have been one shade paler and KH should have been one shade darker (not really too far off, all things considered) - but when testing my tap water, which is a pH of 8, 7dKH (125mg/L) and 18dGH (322mg/L) according to API, the test strips were dead-on accurate. I cannot tell if the chlorine test is accurate, as our city states that they maintain the water at 0.8-1.0ppm but our area is outside city limits and seems to have slightly different parameters than what is listed on the city website. I would still expect some chlorine, but it did not register on the test.So bottom line, it's reasonably accurate for the most part, but I'd use a different test strip for pH. pH is a logarithmic measurement, so the closer to 7.0 you are, the harder it is to measure. Even API tends to be difficult to differentiate at that value and uses an entirely different test for high pH. Most test strips I've seen use 4 different squares, not one! For *all* parameters listed, I wouldn't expect total accuracy at either the high or low end of the spectrum - but it'll definitely put you in the right ballpark and tell you if something has changed since the last time you tested. I take a picture of the test strip next to the bottle at the one-minute mark, and save all my results for future reference so I can compare from week to week. If something is wrong, bust out the liquid chemical tests.

The container the sticks are stored in have a seal to prevent contamination. They work exactly as you need them to and the color shown is vibrant and easy to read.

Great price for the amount of test strips you get. I use them every time I change the fish’s water to make sure the dechlorinator has worked. They colors pop up fast and are accurate

great price; does its job well; the free included temp thing barely shows temp: it is accurate but hardly lights up gotta look close

These test Strips are very accurate. I compared them with the liquid test kit; the Test instructions say to let Nitrate and Nitrite sit for 60 seconds. During my comparison though, I needed the strip to sit for 2 to 3 minutes for a more accurate reading. As you can see from one of my images after letting the test strip sit for 2 to 3 minutes it was more comparable to the liquid test kit, which I consider the liquid test kits to be very accurate overall. These are great for quick testing when needed.

Great item for every aquarium maintenance!

Not great. Seem to get same results even off different water samples. Can’t check for ammonia either.