From reading and personal experience, I agree with Subliminal. I have seen my neighbors tank covered in red slime and algae and yet his phosphates read near 0.. we know that isn't true.. but it is the algae grabbing the phosphates so it doesn't read on the tests.. the phosphates aren't in the water.. its in the algae. That is one of the "odd" ones when it comes to testing. Maybe if you test the water from the beginning, and are super religous about doing weekly tests you will see better results on phosphates.. but if you wait until you have an algae outbreak and suspect phosphates as the cause.. the tests are not going to give you accurate results.
So.. say you started testing phosphates as soon as you put your first fish in.. if you see it rising for a while.. then all of the sudden start to fall, yet, have an algae outbreak at the same time, chances are it is the algae consuming the phosphates.
That is why I highly recommend on of those Phosphate reactors.. cheap and easy and really helpful. I am just starting to use Rowa Phos as the media instead of Phosban because I was seeing a silicate problem in my tank and the Phosban wasn't removing silicates.. Rowa Phos does remove both Phosphates as well as silicates (something you get by using RO water that has bad filters or tap water.. those are the main 2 sources of silicates). You shouldn't have that problem with your new RO setup.. so you can probably save a few $ and go with the Phosban yourself. My RO water comes from the grocery store.. and even though it is "inspected" weekly.. who knows what that means or when the last time filters were changed out.
				
			So.. say you started testing phosphates as soon as you put your first fish in.. if you see it rising for a while.. then all of the sudden start to fall, yet, have an algae outbreak at the same time, chances are it is the algae consuming the phosphates.
That is why I highly recommend on of those Phosphate reactors.. cheap and easy and really helpful. I am just starting to use Rowa Phos as the media instead of Phosban because I was seeing a silicate problem in my tank and the Phosban wasn't removing silicates.. Rowa Phos does remove both Phosphates as well as silicates (something you get by using RO water that has bad filters or tap water.. those are the main 2 sources of silicates). You shouldn't have that problem with your new RO setup.. so you can probably save a few $ and go with the Phosban yourself. My RO water comes from the grocery store.. and even though it is "inspected" weekly.. who knows what that means or when the last time filters were changed out.
 
	 
	 
 
		 
 
		