non-reef safe

Hello I am new to this forum, I'm not exactly new to the hobby (almost a year in) but am when it comes to corals. I was convinced to get some coral however I have two chocolate Chip Starfish. My first basically lives on my filter or the glass and never touches the ground, and my new one...

Could someone who's had a red serpent stafish in a reef tank chime in with their insight? I'd really appreciate it :) I found this old thead about it, but it's vague. It's unclear if there are multiple species of red serpent starfish, and if they are all reef safe. I just ordered a Red Serpent...

Any Reef2Reefers’ here as crazy about the coral eaters as they are about corals? Anyone crazy about larger aggressive fish like Angels, Triggers, and Puffers? I found no stickies or picture threads for Fish Only Tanks. That is not acceptable....... who has a fish only system? I would love to see...