I prefer repashy- Repashy Calcium Plus (3 oz Jar) - Calcium Plus Supplements | Josh's Frogs - but if the reptivite has calcium and you're gutloading the crickets, it shouldn't be a problem. I know petco says they specially "inject" them, but I still gutload them. It wouldn't hurt to try adding a second cricket each night and seeing how he does. Definitely get that vertical space utilized though, that will make him very happy.