Can someone please tell me which zoas these are? There are sooooo many different kinds idk for sure which ones to match them up

Can someone tell me what these 2 things are lol, the green zoa look alike has been in there for over a year but has no teeth around the edges and the other thing just appeared...not sure if it's a sponge or something else but looks like an alien egg sack 🤣

Opinions please on the testing strips verses liquid color testers

First post ever on here, happy my daughter found this app!