5 out of 5
Aquarium Pharmaceuticals AP12063 (API) Phosphate Test Kit
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Pricing Note
Handling Fee Reminding: $3.00 handling fee will be charged for ALL items from the same series, product code beginning with VAS- if you order less than $50.00.
Product Description
The Aquarium Pharmaceuticals (API) Phosphate Test Kit measures nitrate levels in both fresh & saltwater aquariums. Tests nitrate levels from 0 to 160 ppm. 90 tests per kit.
Attention CA Residents: Prop 65 Warning
WARNING:
This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, go to www.p65warnings.ca.gov.
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Customer Reviews
By Peter H. Hattop
Date: September 02, 2013
Excellent, less expensive, better and more precise than test strips to test phosphate in clear or salt type pool water
Rating: 
[5 of 5 Stars!]
[5 of 5 Stars!]
By Joao Junior
Date: August 28, 2013
This product complies exactly what it promises, tests are carried out with precision.The API products are excellent. Recommend the use of this product.
Rating: [5 of 5 Stars!]
[5 of 5 Stars!]
By J. Wollens
Date: August 15, 2013
I was surprised my API master aquarium test didn't come with this test. So, I had to order this separately. Phosphate is one of the important macro nutrients for live plants. I realized my tank had 0 phosphate (phosphorous) in it after getting this test. Now I make sure I have some nitrates and some phosphates in my water for my plants. I have to supplement the phosphorous, but not the nitrogen as I get enough of that from fish waste.Another added bonus. I used to battle green spot algae. That tough algae on the glass that would take 20 minutes of scrubbing with a pad to remove. I read that if you keep your nitrate to phosphate ratio at 10:1 it makes it hard for GSA to grow. Sure enough.... I now regularly test and adjust as needed to keep my ratio at 10:1 Usually I have about 10-15ppm nitrates and 1-1.5 phosphates(after adding phosphorous). After a good cleaning my GSA has never returned. So, this test is critical for me and I perform it weekly.
Rating: [5 of 5 Stars!]
[5 of 5 Stars!]
By J. Tawater "Gadget Water"
Date: July 11, 2013
Good product, easy to use, good packaging, seems to perform as stated, but it's not meant for swimming pools, at least not pools that use salt. The "salt water" in a salt pool is not the same as the "salt water" in a salt aquarium. Maybe I didn't read the description well enough, but this is definitely intended for testing aquarium water. Pool stores seem to be pushing phosphate neutralizers these days for some reason. The store where I shop sold me $75 bottle of something to treat high phosphate levels in my pool water. After doing some research I decided they sold me something I didn't need, but I couldn't be sure because I didn't have a way to test phosphate levels myself. This was the closest thing I could find, but it's not comparable to the test kits the pool stores use.
Rating: [5 of 5 Stars!]
[5 of 5 Stars!]
By C. Pehl
Date: July 02, 2013
I have a few API test kits and I get consistent results. Color charts are protected an instructions easy to follow. While you can cut the English instructions out on this test kit, it seems API could find a better way to do this across the board in their kits.
Rating: [5 of 5 Stars!]
[5 of 5 Stars!]
By Cmont
Date: June 19, 2013
Think you have phosphates in your tap or aquarium water? This test will tell you. As usual with any test kit made by API, this test is fast and highly accurate. API makes great kits and this one is no exception. Works flawlessly.
Rating: 
[4 of 5 Stars!]
[4 of 5 Stars!]