Crushed coral in Filter sock in sump?

[888fish]

Whenever I place crushed coral in a media bag within my sump, my water is slightly cloudy no matter how much I pre-rinse it. My intake into my sump is filtered with a 16" 50 micron filter sock around 800-900 GPH.

I was considering placing the CC into another 50 micron filter sock, zip-tied, and placed alongside my biomedia.

Anyone tried this. Thx in advance!


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[Mount_Prion]

Have you left it in there running for a while? It should settle.

 

[kendragon]

Have you left it in there running for a while? It should settle.

+1

 

[duanes]

Crushed coral, especially finely crushed, like aragonite sand, can turn the water a milky color. The coral sand is dissolved by acids in the water and the result is the white color, that can take a while to dissipate, and because it is actually in solution (as it buffers) it is not filtered out (it is not grit).
I used it in a FB reactor as an aid to buffer alkalinity, and whenever I added it as new media to replace the old that dissolved over time, my water would get milky for a few days, even up to a week if a large amount was needed.
Note the milkiness of the water in the little tank behind the FB reactor.

 

[soupa2]

every time i remove or disturb my bags of crush coral it will make my tank sump cloudy but within 30 mins or so it will clear right up...like everyone says takes time..

 

[888fish]

Thx everyone!


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