Guide or calculator for ROWA phos?

[SauceyReef]

Is there a guide or calculator to dosing ROWA Phos? I have a 13.5 evo. The back of the container is a bit confusing.

 

[blaxsun]

Is there a guide or calculator to dosing ROWA Phos? I have a 13.5 evo. The back of the container is a bit confusing.

Not really (unless it's on the back of the container). I run 500ml of Nyos Phosi-Ex (similar to RowaPhos, but superior in every way) for my 200-gallon system, so if you were to use a comparable amount that would work out to around 33ml for your Fluval.

 

[SauceyReef]

Not really (unless it's on the back of the container). I run 500ml of Nyos Phosi-Ex (similar to RowaPhos, but superior in every way) for my 200-gallon system, so if you were to use a comparable amount that would work out to around 33ml for your Fluval.

I am a bit confused because the ROWA phos is not a liquid. I switched to ROWAphos from phosguard, because someone said its superior haha.

 

[blaxsun]

I am a bit confused because the ROWA phos is not a liquid. I switched to ROWAphos from phosguard, because someone said its superior haha.

ml = grams, same difference.

 

[SauceyReef]

ml = grams, same difference.

Ahh okay sorry I was unaware. Ill post a photo of the back of the bottle momentarily.

 

[blaxsun]

Ahh okay sorry I was unaware. Ill post a photo of the back of the bottle momentarily.

ChemiPure Blue has some (limited) GFO removal capacity, and you can get them in these nice nano tank size packets.

 

[Rmckoy]

I use 23 tbs in a nylon sitting in my sump on my 230
This was the amount I was advised by a lfs reef shop
1 tbs per 10
Gal

I used the same in a phosban reactor with good results . But I had to test often as phosphates will drop faster on a reactor

 

[Randy Holmes-Farley Verified Community Expert]

ChemiPure Blue has some (limited) GFO removal capacity, and you can get them in these nice nano tank size packets.

Elite has GFO, I do not believe the blue has any.

 

[blaxsun]

Elite has GFO, I do not believe the blue has any.

They indicate it has some phosphate removal capability, but yes - I don't believe it's GFO, either.

 

[1112-425XL]

rowaphos-calculator.com

Saltwater 100g
You can enter current phosphate 0.30
Enter desired phosphate. 0.15

Dose = 5 Tbsp

 

[SauceyReef]

rowaphos-calculator.com

Saltwater 100g
You can enter current phosphate 0.30
Enter desired phosphate. 0.15

Dose = 5 Tbsp

perfect - thank you. checking it out now.

 

[SauceyReef]

Calculator Results: Aquarium size: 13.5
Current Phosphate (PO4) level in aquarium: 1.5 ppm
Desired Phosphate (PO4) level in aquarium: .1ppm
Recommended amount of RowaPhos to use in phosphate reactor: 5tbsp / 72ml / 2.54oz
calculate

Should I only do 2-3 tbsps than because 1.3 ppm phosphate is a pretty substantial drop!

 

[1112-425XL]

I would start low, maybe 2 tbsps. and see how it goes. I have 112g including sump. I use 5 tbsps in a mesh bag with a little filter floss above and below. I change it about every two weeks. Keeps me at 0.24

 

[SauceyReef]

I would start low, maybe 2 tbsps. and see how it goes. I have 112g including sump. I use 5 tbsps in a mesh bag with a little filter floss above and below. I change it about every two weeks. Keeps me at 0.24

Maybe I should use less than?? I have a 13.5 gallon lol. Big difference than a 112gallon.

 

[1112-425XL]

Start with a tbsp and check your phosphate before and again in a day or two and see what you think.

 

[Randy Holmes-Farley Verified Community Expert]

They indicate it has some phosphate removal capability, but yes - I don't believe it's GFO, either.

They do, and I think they are misleadingly taking freshwater data (if they have any at all) , where a di resin will bind phosphate, and letting marine folks falsely believe it will do so in seawater (it won’t).

Any phosphate effect it may have is from binding organics.

 

[Randy Holmes-Farley Verified Community Expert]

Calculator Results: Aquarium size: 13.5
Current Phosphate (PO4) level in aquarium: 1.5 ppm
Desired Phosphate (PO4) level in aquarium: .1ppm
Recommended amount of RowaPhos to use in phosphate reactor: 5tbsp / 72ml / 2.54oz
calculate

Should I only do 2-3 tbsps than because 1.3 ppm phosphate is a pretty substantial drop!

I do not believe calculators can be particularly useful for GFO. GFO won’t bind the same amount of phosphate at 0.03 ppm as it will at 0.3 ppm.

 

[SauceyReef]

I do not believe calculators can be particularly useful for GFO. GFO won’t bind the same amount of phosphate at 0.03 ppm as it will at 0.3 ppm.

I am just trying to get a starting point for how much I should be putting in my tank without dropping phosphate to fast. Any idea?

 

[SauceyReef]

@Randy Holmes-Farley I swear you have been helping me this past year trying to get my phosphate straightened out. Even with regular calcium nitrate dosing, and without GFO my phosphate levels are high and bipolar.

 

[Randy Holmes-Farley Verified Community Expert]

I am just trying to get a starting point for how much I should be putting in my tank without dropping phosphate to fast. Any idea?

I don't know the basis for the calculator, but I'd go by the manufacturer recommendation (typically something like 1 tablespoon per 4-8 gallons) as a starting point, or half or a quarter as much if you are very concerned about bottoming out, and then adjust by trail and error.

I typically used a half to 3/4 cup at a time in my reef tank (120 display, 300 gallons total) and changed it after a few weeks.