convert phosphate ppb to ppm

[Chicago]

so I got new hanna checker for PPB.. billion.

shows 34 for the tank and
shows 26 coming out of my bio pellet reactor.

is the conversion then .034 and .026
salinity 1.024
alk is 9.18
calcium 384..probably a little low

are these good numbers overall for sps tank. I noticed recently lack of polyp extension on some sps

thanks

 

[sahin]

so I got new hanna checker for PPB.. billion.

shows 34 for the tank and
shows 26 coming out of my bio pellet reactor.

is the conversion then .034 and .026
salinity 1.024
alk is 9.18
calcium 384..probably a little low

are these good numbers overall for sps tank. I noticed recently lack of polyp extension on some sps

thanks

As long as you have the Hanna ULR Phosphorus meter then do as follows:

Whatever number that the meter shows, multiply that number by 3.066 and then divide the result by 1000.

Eg 34 x 3.066 = 104.2 / 1000 = 0.1ppm of Phosphate.

To do this in your head rather than use a calculator, just multiply by 3 and move the decimal 3 places left.

Eg
34 x 3 = 102.

102.
10.2
1.02
.102 = 0.1ppm

Hope that makes sense.

 

[sahin]

Forgot about the parameters you were asking about.

You could bump the specific gravity to 1.025 and the Ca to around 420ppm.
Ensure that your Refractometer is calibrated properly etc.

You also need to ensure you arent running too much Bio-Pellets. I would tend to use no more than 2/3 of what the manufacturer recommends.

How old is the tank?

A sudden lack of PE could be pests like Redbugs or AEFWs. Have you checked for these?

It might also be that the Biopellets are taking out too much stressing the SPS.

Without more info/history of your tank all I can do is guess.

 

[Chicago]

What I thought to convert. Just move decimal three places . My reactor is causing some slim cyno. Intersetingly though my sps seem to like or did like the by products from the bio reactor. Which runs to my large skimmer

 

[sahin]

What I thought to convert. Just move decimal three places .

If you have the Hanna HI736 Ultra Low Res Phosphorus meter then the meter gives a reading as a Phosphorus measurement (P).

To convert to Phosphate (PO4_3-) you multiply by 3.066 and then divide by 1000 to give a ppm measurement.

My reactor is causing some slim cyno. Intersetingly though my sps seem to like or did like the by products from the bio reactor. Which runs to my large skimmer

How much Biopellets are you using? And how large is your total water volume?

 

[Chicago]

That is a bummer. I get it ow. That conversion puts me at .1 phosphate. Time to go change the gfo media. Interesting thing is though. The bio reactor is also helping to reduce the phosphates. On the ultra low. Tank was 34 and coming out of the reactor was 26. I tend to feed heavy. Tank volume is 700 gallons. I do have some hair algae growing in the sump which is a frag grow out also. It's a 300 gallon horse trough lit by a it2080 led. Corals look good but recently polylp extension not so good. Betting it's tithe .1 phophate level.

 

[sahin]

What is your nitrate at?

Once Nitrates hit very low levels or undetectable, PO4 reduction by Biopellets decreases. But it sounds like there is still some NO3 in the system due to the reduction of PO4 by the action of the bacteria in the Pellet Reactor.

Just take it easy with the PO4 reduction. If the SPS look stressed/unhappy now, aggressive PO4 reduction has exacerbate the situation.

How are you SPS colours?

 

[Chicago]

Colors all looking great. No3 not detectable. But bio reactor is def reducing. But phophate is .1. Not .01. But .10. I love to keep a lot of fish and do a lot of water changing and wet skimming. I'll raise the calcium today with the salinity. Move salinity from 1.024 to 1.025 which should raise calcium levels also. Right now calcium is 384. Not bad but can use some supplement. Do have a slight hair algae problem because of the phosphates. Tangs are nice and fat because of it.

 

[sahin]

Colors all looking great. No3 not detectable. But bio reactor is def reducing. But phophate is .1. Not .01. But .10. I love to keep a lot of fish and do a lot of water changing and wet skimming. I'll raise the calcium today with the salinity. Move salinity from 1.024 to 1.025 which should raise calcium levels also. Right now calcium is 384. Not bad but can use some supplement. Do have a slight hair algae problem because of the phosphates. Tangs are nice and fat because of it.

Any chance of a few photos of your tank/corals? Be interesting to see the colours with PO4 of 0.1ppm.

 

[Chicago]

will try and post later

 

[Mulgabeth]

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