View Full Version : Red Sea coral pro salt question

08/13/2017, 05:03 AM
Hi all, this is mainly aimed at red sea Kev, I've read other threads with the same question but none were answered by you Kev?

When mixing coral pro salt, what is the brown residue left behind that accumulates after 24hrs?. I never used to get this but suddenly started happening, I do use in for my dt within hours of mixing, but I also mix for the week for my hyper salinity cycle


08/14/2017, 03:46 PM
There are lots of possibilities. Does that mix have organics in it? They might be my first guess, but salts without organics sometimes produce residue, as well.

08/19/2017, 02:35 AM
The brown residue is mineral precipitate from overmixing and/or heating the water before the water is mixed. This is not unique to RSCP.

Follow their directions and you will not have any residues:

*Use reverse osmosis (RO) water at approximately
20C/68F. Always add the salt to the water.

*Mix vigorously (without aeration) for 0.5 - 2 hours,
until all of the salt is dissolved and pH has stabilized
to 8.2-8.4. DO NOT mix for more than 4 hours

*Raise the water temp to 25C/77F and measure the s.g./
salinity with an accurate hydrometer/ refractometer. Add salt
or water as necessary to achieve the desired parameters.