Phosphate levels

[Riblet]

How long would it take for rock to leach out enough phosphate to reach equilibrium with the water? I'm soaking my rock in water to see what the phosphate level is now after treating the rock, should I wait 24 or 48 hours before I test or longer?

 

[jduck]

Phosphates slowly leach out over time. What did you do to treat the rock?
But if you get a high number after a few days you know that there is still some in the rock.

 

[Riblet]

Phosphates slowly leach out over time. What did you do to treat the rock?
But if you get a high number after a few days you know that there is still some in the rock.

Seaklear

 

[jduck]

Unless you use an acid bath to strip it off, it may still leach.

 

[Riblet]

Unless you use an acid bath to strip it off, it may still leach.

I did an acid bath before the seaklear treatment.

 

[dankreef]

It can take a few days for sure you never really know. Just run some gfo incase any is leaching and test.