Now now, before we dive headfirst into sticking things into our tanks, do you have a test kit? Do you know the parameters of your water?
You should try 1 tablespoon of it in a 1 gallon bucket, test water before you introduce and then test it again in a couple of days to see EXACTLY what it does.
If it affects your water the way you want it to, then do conversions and add the respective amount into your filter. Low pH water like 6.5~7 will dissolve the coral and release calcium carbonates into your water, adding to your kH. This will essentially "freeze" your pH because the high buffering capability of your kH will make it hard for your pH to rise or drop.
As always, you want to keep your environment stable, a high kH will limit the fluctuation of pH in your tank, but it's wise to remember that gH is also very important. You don't want pH, kH, and gH to get thrown out of whack, shrimp require it to be delicately balanced.
If you aren't easily bored, here
is a nice and comprehensive read on pH, kH, gH, and how to control them.