Potassium nitrate

chiefifd

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Looks like Potassium is pretty easy to test for, levels around 400 ppm should be ok. But Sodium based Nitrate and Phosphate powders are easy to find and cheap too.
A Potassium test kit might be a good thing to have anyway.
Thanks, Randy, never really thought about Potassium build-up.
 
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chiefifd

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Ya, me too.
I've seen and purchased at least one commercially produced Potassium Phospate based reef product to raise P04.
Never thought about the Potassium accumulating. The added sodium in (Sodium Phosphate) would bee seen in the salinity level I believe. Maybe I'm wrong........
 
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saltgogi

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Ya, me too.
I've seen and purchased at least one commercially produced Potassium Phospate based reef product to raise P04.
Never thought about the Potassium accumulating. The added sodium in (Sodium Phosphate) would bee seen in the salinity level I believe. Maybe I'm wrong........

Was wondering the same thing. I guess thats how we'd check sodium. In that case, it'd be much safer to do it with sodium.
 
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Randy Holmes-Farley

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Im curious as to why more people dont choose sodium variants?

Some folks started the dosing method using stump remover at Home Depot, and it became ingrained with no real consideration (IMO) for purity or potassium issues.
 

Randy Holmes-Farley

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saltgogi

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saltgogi

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and for sodium phosphate, i can only find trisodium phosphate or disodium on google. Would either of these be ok?
 

Randy Holmes-Farley

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Thanks Randy for the link! One question does the sodium in the Sodium Nitrate or Sodium Phosphate show up in the total salinity of the reef tank?

Yes. So does potassium, but more so since it weighs more.

But either effect is small.

Seawater is like 35,000 ppm. Boost nitrate by 1 ppm and you are boosting salinity via sodium by less than 1 ppm.
 
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Randy Holmes-Farley

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and for sodium phosphate, i can only find trisodium phosphate or disodium on google. Would either of these be ok?

Yes, they are fine if adequately pure. :)
 

Randy Holmes-Farley

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I could be wrong but it seems like you would need a LOT of this stuff.. one bottle is 113 grams which is about 1/4 lb. So i guess 1/4 as potent if dissolved in 1 gallon of ro/di

113 grams of sodium nitrate (containing more than 82 grams = 82,000 mg of nitrate) will boost 100 gallons (378 L) of aquarium water by 82,000/378 = 217 ppm.

So you could boost the 100 gallon tank to 3 ppm every day for 72 days.
 

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