#1 looks like maybe a leather (purple/gray) could also be cucumber
also orange/yellow looks like sponge
#2 Halimeda a macro algae also green hair algae the orange thing no clue
#4 green hair algae and Halimeda (macro algae)
#5 same as #1
yes it's all safe in a
FOWLR but get rid of the hair algae
looks almost like the rock I got