I ordered this Phoshate test product some months ago - Actually, you might like to know that this thing is made for little tropical fish tanks. I use the word, "little" fish tanks - as compared to a "swimming pools".For some reason, this stuff can't be found in 'Pool Supply' stores in most of So. Florida - so, I'll try the fish tank stuff - mind you, this is only a 'test' kit, not a remedy. If you find phosphate in your pool water, then you're going to have to buy some pretty expensive pool stuff to remedy the problem.In the past year Phosphate seem to have become a problem in residential swimming pools in our area. I hope I'm not starting something here - fish tank stuff is largely reasonable in price compaired to swimming pool supplies. If the producer of this stuff discovers the swimming pool market I fear what will happen to the price of his kits - get the picture?.I hope that the Phosphate problem in pools is not [also] connected to Globle Warming. I'll have to work extra hard to try and make the connection on that one.