Zoas not opening

[Octane13]

Since week 3 or 4 after both zoas went into the tank they remain closed most of the day. They are opening in the morning but about mid day (some days) they stay closed. Have noticed that a few of the polyps stay open all day. I have dipped them a couple times and dipped peroxide once. Each time they are dipped they open for a few days. I dipped peroxide bc I see algae between the polyps. Today I decided to give them a move and noticed this “sponge” on one of them

They are still spreading despite these hardships. Any suggestions?

 

[reef lover]

Maybe a little more flow if sponges are growing and a little less light.

 

[Octane13]

Thanks, I moved them to down in the tank but the area has less flow than before. Where they were originally they would be blown off the rocks if the plug wasn't glued well