RO water with po4

[Dan7575]

Hi guys,

I have always had po4 too high around 0.1 - 0.2 and trying to get it down to 0.03 with rowaphos but tested my RO water today and it is 0.04. Is this normal?

 

[shwareefer]

Are you running a DI stage?

 

[T-J]

Per a post about 2 years ago by @Randy Holmes-Farley , that amount of PO4 is "insignificant" compared to what you're adding via foods.

Phosphate in RODI water

I’ve been battling with phospates and was shocked today when I tested my freshly mixed saltwater and found 0.034 phosphates using Hanna checker. I’m worried about the phosphates I’m adding to my system with rodi water every time my ato tops off the tank. My rodi system consists of two sediment...

www.reef2reef.com

 

[Dan7575]

Are you running a DI stage?

Yes

 

[Dan7575]

Per a post about 2 years ago by @Randy Holmes-Farley , that amount of PO4 is "insignificant" compared to what you're adding via foods.

Phosphate in RODI water

I’ve been battling with phospates and was shocked today when I tested my freshly mixed saltwater and found 0.034 phosphates using Hanna checker. I’m worried about the phosphates I’m adding to my system with rodi water every time my ato tops off the tank. My rodi system consists of two sediment...

www.reef2reef.com

Excellent thank you, makes a lot of sense

 

[Woodyman]

Hi guys,

I have always had po4 too high around 0.1 - 0.2 and trying to get it down to 0.03 with rowaphos but tested my RO water today and it is 0.04. Is this normal?

You had good info posted above.

Another point to consider if you tested with a Hanna meter those are not designed for testing phosphate/phosphorus in fresh water. So your results are skewed just from the water being used.