Lol, that's a beauty.
Phosphate in live rock bin
- Thread starter kharmaguru
- Start date
Lol psssh come on now. You can go higher! 
Yes, it's been 'cooking' for about 10 months. I figured I'd correct the salinity and do some tests. Nitrates were 50.
Last time a few months ago the meter just errored which means over .9, so it's getting better lol.Lol psssh come on now. You can go higher!
You mean "continued".
YesYou mean "continued".
Ocean live rock that has been in and out of various aquariums for more than 20 years. I have a couple hundred pounds of the same rock dried that I would like to rejuvenate someday.
wakesetter
Premium Member
Have you tried lanthanum chloride? Should knock that PO4 right out.
It's just a bin keeping the rock live in darkness. I'm not worried about the nutrient levels right now but thanks.
My guess is it would bind with what's available in the water but do nothing until more leached out of the rock. So a 100% water change would probably do the same thing.
wakesetter
Premium Member
I don't know if that's the right way to look at it, but it will precipitate out if the water. Because an equilibrium is always being sought, that will draw PO4 out of the rocks, which will them precipitate out as well. It's not technically pulling it out of the rock, but will have the same effect.
wakesetter
Premium Member
But LaCl is so cheap and fast compared to water changes.
Personally I would just use water changes to reduce it. LaCl is not going to have any effect on what's tied up in biofilms and sponges and biofilms modify the sorbtion properties of the surfaces they're living on. Water changes will also lower the unfavorable types of hydrophillic DOC that can promote pathogenic shifts in coral microbiomes.
Sponge symbionts and the marine P cycle
Phosphorus sequestration in the form of polyphosphate by microbial symbionts in marine sponges
From the introduction of this paper:
link.springer.com
"Organic matter is masking the original mineral surfaces and
thus, these surfaces change their sorption behaviour drastically."
Sponge symbionts and the marine P cycle
Phosphorus sequestration in the form of polyphosphate by microbial symbionts in marine sponges
From the introduction of this paper:
Sorption Properties of Biofilms
The distribution and fate of pollutants in soils, in sediments and in the water phase is highly influenced by sorption processes. Sorbing surfaces and materials can provide a sink for dissolved matter. If the conditions change, desorption may occur and, thus, turn...
thus, these surfaces change their sorption behaviour drastically."
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