Clean Up Crew

[Jaysreefworld]

When Do I need to add them? I'm currently cycling my tank

 

[cosmo]

When you add fish or start seeing algae. I like to add 1/2 the cuc when I add my first fish, the do a refresher pack with some harder inverts like shrimp , crabs and urchins after the tanks is settled in and some algae is growing.