Frogspawn question?

[nine28girl]

What does is mean when the top green part disconnects from the rock/coral part? I have a few branches of this frog spaw throughout my tank all doing well except one that has three heads, it keeps disconnecting heads from the rock part - they float around the tank then I slip it back into the live rock and it's fine?? Looks beautiful as ever only no bottom part?
Sam

 

[reefkprz]

the bottom part will regrow. they tend to release heads when stressed or the current is too high for them its a survival trait. thry moving the original colony to a slightly lower flow and see if that stops it from dropping heads, also check all your water parameters.