anything wrong with these zoos?

[hariii2]

I have had these zoos for a few years. They have never really taken off and spread but they have always looked healthy. But now they look like this and have for about 2 weeks. Is there something wrong with them?

Thanks,
hari

 

[killingseed]

water par.? are you running a heater? what light? how old are the bulbs?

 

[Pufferpunk]

Are those zoas? Look like some kind of buttons/protopalys.

 

[650-IS350]

botton polyps