So I'm currently setting up a little 10gal saltwater tank. I bought 3lbs of live rock and I'm mixing the salt into the water. The salt hasn't completely dissolved into the water yet (after 15mins of stirring). The water is very milky and has "blocks" of salt still hanging together. Is this normal or should I try to take away the salt that isn't dissolved yet? Sorry if this is normal; I couldn't find anything online about it.