Phosphorus Hanna tester

[Reef.]

I'm pretty sure that BRS video was done with the old Phosphate checker before the Phosphate ULR checker was out.

I think it was, maybe they will redo the test.

 

[Scorpius]

Take your ppb result x 3.066/1000 gets you ppm.

 

[ScottB]

Just out of curiosity, why do so many people get the Phosphorus Checker instead of the ULR Phosphate Checker? With the ULR Phosphate Checker you don't need to be a mathematician. I'm assuming they are both relatively close in accuracy, maybe the only difference is the Checker does the math for you? I'm not sure.

IIRC, the preference for phosphorus over phosphate is the smaller +-% margin of error. Look it up on BRS; I think it is published there for each unit.

 

[Rmckoy]

If everything looks happy I would not do a thing... keeping phosphates stable is just as important as keeping alk stable

 

[Rmckoy]

Everything does look happy .
I found a few parameter charts online .

their suggested levels are a lot different. .
Maybe a old chart ?

 

[ryshark]

Everything does look happy .
I found a few parameter charts online .

their suggested levels are a lot different. .
Maybe a old chart ?

I think the 0.03 is the older info and the less than 0.20 is more current. You should be fine with your 0.074 and a water change. In fact, .074 Isn't really high, its good.

 

[ryshark]

IIRC, the preference for phosphorus over phosphate is the smaller +-% margin of error. Look it up on BRS; I think it is published there for each unit.

It doesn't look like much of a difference:

Phosphate ULR Checker = Accuracy: ±.02 ppm ±5% of reading
Phosphorus ULR Checker = Accuracy: ±5 ppb ±5% of reading

but yeah, the phosphorus error would be smaller at +/- .0153 vs .02

 

[Rmckoy]

I think the 0.03 is the older info and the less than 0.20 is more current. You should be fine with your 0.074 and a water change. In fact, .074 Isn't really high, its good.

Less than .2
The other chart suggests .03

 

[ryshark]

Less than .2
The other chart suggests .03

Use less than .2 as your guide, the hobby has gone in that direction.

 

[Uncle99]

Less than .2
The other chart suggests .03

0.03ppm phosphate for the first year or two of maturity.
Then, you can run higher phosphate in the .2ppm range, this one is 4 years old and running .25ppm.

Everyone makes a cake differently, water chemistry is much the same.

If I remember, Randy’s not a fan of that list.
Might be a good starting point.

 

[Rmckoy]

<2 seams like a lot could happen with that huge range .
I’ll keep a eye on my .074ppm and maintain it with watcher changes .

 

[1ocean]

The Hanna can wander a bit, 24ppb is great.
Increasing such small amounts can be a slippery slope. You may find yourself buying some GFO to reduce it.
I would not touch that.
When mine is in the 10-50ppb range, I’m happy.

Nice tank, love it....I am in the process of building a 300 to replace my 140.
I am building the stand (industrial fiberglass tubes) and the race track design 2 sumps and 1 refugium.

 

[Timfish]

Just FYI but the Hanna phosphate and low range phosphorus testers are only testing for phosphate (orthophosphate). The low range phosphorus tester is just using a conversion factor to present the results as phosphorus.