Wow, Are these just actual photos under light organism? meaning any editing/ filters?. If they are untouched its freeking amazing for what the halo light can do.
I would leave them in a 5 gal bucket with bleach for 5 days. They can out clean then would soke in Seachem prime for a day and then air dry for a couple of days before using them. Had no problems.
I have a sca-301 right now it's really moody it would overflow for no reason. Plus I have about 8 fish in that aquarium and was thinking a better skimmer would be a good idea.