white powder

[digitalsteve]

hey guys , i have just added new water to my tank in anticipation of the frogfish which i am getting, but i have noticed that some of the salt in the mix hasnt dissolved it is still in the tank as a white powder on the wall , sandbed and on my powerhead, will this dissolve over the next couple of days or is there something i can do to eliminate this issue? bytw the salt is i/o and the salinity is at 1.023 using my refract.