Monti & chalice is this normal for them to puff up ?

[waterbox100.3aus]

Just added a Monti and chalice they look pretty happy but I’m not sure I feel like they have puffed up. The Monti was flat when I got it now it looks like it has been in the oven like a cup cake rising... is this normal ?

 

[Lasse]

IMO - it looks like thriving corals - yes they should "puff up"

Sincerely Lasse

 

[waterbox100.3aus]

thanks for your help