saltwater aqayrium cycle

How’s it going! I’m new tot he hobby and my first tank is a Coralife Biocube Jr smart. It says it’s a 14g tank but I can’t only seem to get 10g in it. I used Caribsea live sand with some caribsea aragonite, and 7lbs of caribsea live rock. I filled with imagitarium pacific saltwater, and...