Possible Ich (ick)?

[ILMX20]

Hi everyone
I have my (somewhat new) reef tank set up, finally. I have two ocellaris clownfish, a lawnmower blenny, two snails, and five corals.
I’ve seen my clowns and blenny flashing occasionally against the sand or the glass. I’ve done a water change last night and it seems to have helped. I can’t see any white spots on any of my fish, so I don’t really know what the issue could be? The corals and snails are all fine and doing well so I’m a little bit confused. The clowns and blenny are still eating, too.
Any ideas?
Since I’m new to saltwater tanks, I don’t have a quarantine tank to put the fish in (I wish I did, but I don’t have enough room or money right now. Sorry if that’s a bit immature of me to not have gotten two.)

Thank you all so much!

 

[JumboShrimp]

Not wishing any bad on you— but the white spots may come back. There is a ton of reading you can do here on R2R, so “search” and enjoy the knowledge, either for now or for in the future. Best wishes!