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takes me just over an hour when water is at 25 oC for 1.026 salinity using a 25L (5g) bucket.
Don't mix for too long, they recommend not to as precipitation will occur.
Precipitation of what? And why? How long is to long? Unless you have a heat source that could drive the precipitation anything that will precipitate out should do so after adding all the saltmix.
A small powerhead accidently left on overnight or all day mixing shouldn't precipitate out anything major.
Am I missing something?
yes, you are missing out on Red Sea's instructions....
But circulating the water continuously with out significant temp increase should not cause precipitation. If it did everyone's tanks would be a white cloud all the time.
Hello,
I will be mixing this with RODI, power head and a heater on a 5g bucket. How long should I mix this? Is 4 hours good enough or longer?
Thanks!
I just want to point out again that the OP was asking about standard (blue bucket, see the title) redsea salt. Not redsea coral pro. Redsea coral pro has elevated levels of the big 3, so there is a precipitation risk. The standard salt in the blue bucket doesn't have this issue.
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To answer the original question, the mix time minimum is as long as it takes for ph to stabilize and for the water to become sufficiently oxygenated. A few hours with a strong powerhead should be plenty. There is no maximum time for mixing with the blue bucket salt. You also don't have to worry about heat causing precipitation.
it doesn't take a big heat difference to do it , ANY heat difference can cause precipitation, a small increase of heat will LOWER the salinity and lower the pH, and a small decrease will increase them, that little change is all that's needed. Bigger temp changes have bigger effects, that's why many peoples heaters, pump motors and even water lines (where heat exchange with the air) create and retain precipitation.