Anyway the water changes have never worked to reduce my po4 so now I have about 100mL rowa. Lets hope it works.
Anytime you do a water change you are diluting (to a degree equal to the size of your water change) whatever nasties are in your water. You may not have been doing large or frequent enough water changes to much notice the difference.
More frequent water changes..small ones twice a week..will also help, so don't back off on those while you are trying to reduce your phosphates (and nitrate levels) with the reactor, or it will have to do even more work. Carbon also helps reduce these..if you change it frequently enough
Who told you reefing was a cakewalk? :spin: