Wow, sounds like your betta is having fun with those bubbles! Mine used to build pretty big nests too. I would take a spoon and remove some bubbles when I did a water change. I would put them back in when I was done. He would add on to it a little bit until he was happy with it, I guess! I really don't know if it upsets them if we remove it. I just tried to save some for him. One time half the tank was covered. Sometimes I told my husband that the whole house would be a big bubble soon! I don't think it's anything to really worry about. I don't think my parameters were ever affected. It's nice that he's so happy, especially in a community tank.
P.S. Did you find a lfs
that sells live food or did you end up growing your own?