Mold question? Help please.

[sp13126]

My tank has been up and running since august and today I noticed the background is starting to get these small spots of white mold. The tank does have frogs in it, so I'm a little worried. Should the frog be removed and place in a temporary housing until this mold run its course?? I have included so pictures of the mold in question. Any help would be great. Thank you for looking