Phosphate test kits

[anthonys51]

I haven't found any reasonably-priced saltwater check solutions. Hanna sells a solution that might provide a fairly reasonable test of the Phosphate Checker, but it's primarily a freshwater solution, and I wouldn't use it on the Phosphorus ULR.

Have you found one for alk. My friend tests his tank with Hanna gets 8.9 with salifert he gets 7.9. Both are acceptable range. But he was wondering witch one is correct. Told him only god knows


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[bertoni]

It's possible to make a test solution for the Salifert, but I don't think it'd work at all for the Hanna. I don't know of a solution that is reasonably cost-effective and would work. Saltwater standards are available, but pricey.

 

[anthonys51]

Ok thanks [emoji120]


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[Martin Kuhn]

http://www.bulkreefsupply.com/fauna-marin-multi-reference-solution.html

http://www.reefanalytics.com/Wassertests/Multireferenz-in-Meerwassermatrix-150-ml::229.html

http://www.aac-online.co.uk/salts-b...a-for-seawater-reference-and-calibration.html




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[anthonys51]

Question I think it's ready to be change but want your opinion. Jan 18 test 2.00 ppm. Added 6 cups of Gfo Jan 19 tested jan 26 test .81. Tested today .65. Should I can Gfo


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[Vinny Kreyling]

Anthony,
Check the water coming out of the reactor to see the difference between it & tank water.
That will tell you if it is still working. Looks OK to me.
6 cups is a lot of GFO.

 

[anthonys51]

6 cups is a lot of GFO.[/QUOTE]

Yes I am hearing this a lot. Its might of been only 5. I didn't fill the cup all the way it was a 1 cup measuring cup




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[tmz]

I'm not sure what your levels are given the test variations noted. Don't know which is correct and have no experience with whatever Milwaukee test you are using. Salifert seemed accurate to me in the higher ranges when I cross checked with a hanah colorimeter several times a while back .

I agree go slow with the gfo or other removers if you continue to use it .. Phosphate is vital to living things for a number of functions including it's effects on calcification and others. Sharp quick reductions seem to cause coral stress reactions like paling particualry at lower ranges.

Since you are growing macro algae I wouldn't drop the PO4 much below .05ppm to .1ppm and I'd move cautiously form your current .8 which might also be fine as is for your tank.

10 ppm NO3 might be ok but I prefer it lower. NSW runs around 0.2ppm.

Dosing iron will not discourage nuisance algae ; probably will encourage it along with the macros.

 

[anthonys51]

I'm not sure what your levels are given the test variations noted. Don't know which is correct and have no experience with whatever Milwaukee test you are using. Salifert seemed accurate to me in the higher ranges when I cross checked with a hanah colorimeter several times a while back .



I agree go slow with the gfo or other removers if you continue to use it .. Phosphate is vital to living things for a number of functions including it's effects on calcification and others. Sharp quick reductions seem to cause coral stress reactions like paling particualry at lower ranges.



Since you are growing macro algae I wouldn't drop the PO4 much below .05ppm to .1ppm and I'd move cautiously form your current .8 which might also be fine as is for your tank.



10 ppm NO3 might be ok but I prefer it lower. NSW runs around 0.2ppm.



Dosing iron will not discourage nuisance algae ; probably will encourage it along with the macros.

Thanks will leave current Gfo in. And when I do add more won't add so much. That seems to be a mistake. Although luckily no corals are showing any signs of stress. But I think I got lucky in-spite of me I should of know better thanks all


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[Vinny Kreyling]

Talk to me tomorrow night.

 

[anthonys51]

Talk to me tomorrow night.

Will do


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[Timfish]

Just got the Milwaukee low range tester and results was 2.06 and 2.00

Also tested on salifert got
.50 ppm. Maybe a little darker but pretty close to .50 ppm

The Milwaukee I got 2.00 and 2.06. That's a big difference. So what test is right.

. Plus how can my monti Green slimmer and blue acro still be living with 2 ppm phosphates . . .

FYI .5 ppm is the upper range found on reefs. Also, upwellings can expose reefs to levels as high as 2.0 ppm. Paradoxicly increasing PO4 across the range found on reefs reduces calcification in corals but increases their growth rate.

 

[anthonys51]

FYI .5 ppm is the upper range found on reefs. Also, upwellings can expose reefs to levels as high as 2.0 ppm. Paradoxicly increasing PO4 across the range found on reefs reduces calcification in corals but increases their growth rate.

How can you increase growth and slow calcification. Please explain. Also if there an article you found this in


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[tmz]

I don't think you can "reduce" calcification and increase growth rates.

As for the "paradox" in some tanks with high nutrients , it may be that high phosphate provides more energy to move calcium and carbonate to calcification sites via ATP(Andenosine Tri Phosaphate) and enhanced zooxanthelae density. While at the same time , the higher PO4 alters the calcification process by poisoning some calcification sites resulting in less dense coral skeletal mass.

 

[anthonys51]

So they might grow faster but will be weaker. I think I understand


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[tmz]

That's the theory.

There is at least one paper out there, that I recall ,which shows some increased stoney coral growth rates at higher PO4 rates including more but less dense skeletal mass at higher water column PO4 levels but those corals have weaker less dense skeletons.

My thought is those accounts don't indicate less calcification which could actually involve more calcification driven by the energy the coral gets from high PO4 increasing it's ability to move calcium and carboante to the skeltal matirix but resluting in altered skeletal growth from the PO4 in the water's effect on some of the nucleation sites.