Granualar IS solid - pour it into a sock, hang in front of skimmer or tie the sock to a chunk of that foam pool noodle stuff and allow it to float around until dissolved. Pouring into your skimmer risks causing issues with the equipment, also if you backwash your filter, some of the undissolved granuals will be expelled in the backwash water. It can take up to several days for the granuals to dissolve.