Phosphates were 0.50 ppm, reduced them 0.22.

[WVReefJunkie]

I finally picked up a Hanna Phosphate checker. Measured phosphates at 0.50 ppm. After replacing my gfo out of my two little fishes phosban 150 and 10% water change, I was able to reduce them to 0.22 ppm.

 

[Randy Holmes-Farley Verified Community Expert]

That makes sense. If phosphate does not drop further, the GFO may need replacing again.

 

[WVReefJunkie]

OK, what would be a good target level of phosphates? I have a 220 Gallon Reef tank Sps, Lps, and softies. Iam also running a Kalk Reactor. I read that ocean levels are .0005.

 

[Randy Holmes-Farley Verified Community Expert]

OK, what would be a good target level of phosphates? I have a 220 Gallon Reef tank Sps, Lps, and softies. Iam also running a Kalk Reactor. I read that ocean levels are .0005.

I generally recommend about 0.02 ppm.

This has more:

Phosphate In The Reef Aquarium

https://www.reef2reef.com/blog/?p=3184

 

[WVReefJunkie]

Let's say that I couldn't get levels to that level. You recommend another Reactor. I have a two little fishes 150 phosban Reactor on it now with 289 gallons of total water volume.

 

[Randy Holmes-Farley Verified Community Expert]

Replacing the GFO more often is usually easier than getting a second reactor. It sounds like it is coming down nicely, and the water change didn't contribute much to the drop.

 

[WVReefJunkie]

Thanks Randy, I am going to see what the levels do daily. Then change the gfo accordingly.

 

[Randy Holmes-Farley Verified Community Expert]

Sounds good.

Happy Reefing.