Lanthanum Precipitate Question

[TheDuude]

I have been dosing lanthanum to lower po4 ( phosphate e). 10ml diluted into 1000ml rodi dripped into 1 micron filter sock. If I leave the sock in the water for a few days to treat multiple times will the Precipitate that is trapped in the sock dissolve back into the water?

 

[Randy Holmes-Farley Verified Community Expert]

Depends on both the lanthanum and phosphate concentrations in the water.

Why do you ask?

 

[TheDuude]

Wondering best practice, is rising the sock after every treatment necessary?

I have a lot of bound up phosphate so I'll be dosing for quite some time to get my levels down.

Po4 hovering around 1.6 dosing 10ml every other day

 

[Randy Holmes-Farley Verified Community Expert]

Wondering best practice, is rising the sock after every treatment necessary?

I have a lot of bound up phosphate so I'll be dosing for quite some time to get my levels down.

Po4 hovering around 1.6 dosing 10ml every other day

I don't know what is best practice, and best likely depends on the goal (protecting fish, preventing redissolution, etc.). Some folks do not use socks at all, but dose slowly into a skimmer inlet.

In your situation, I'd be unlikely to clean it more than once a week unless it got clogged and ceased to function properly.

 

[TheDuude]

Thanks for the input and that is exactly what I have been doing.. I'm not in rush to bring down as po4 has been this high for about a year and want to protect my fish as much as possible.