In the Philadelphia area the phosphate content of my tap water is consistently 2.0 ppm per testing. The water quality report does not show these levels, instead it simply states that phosphate is added to the water to prevent lead leaching into the water supply.

I was previously using a phosphate absorbing material in my canister filter to reduce the phosphates in my 29g tank. I have since removed the material since I believe my H. Difformis is letting me know that was a bad idea. My phosphate are currently measuring at 0 ppm. All tests were done using a AP test kit. I know these test kits are not necessarily very reliable. But...

Has anyone else had experience with tap water that is high in phosphate (even > 2.0)?

I am going to begin this weekend with 50% water changes and no additional effort to reduce the phosphate levels. If my dosing of other elements is sufficient I am beginning to believe this will simply meet my phosphate requirements for the tank as it will essentially provide 1ppm of phosphate.

Rock On,
PhillyB