The Foxface and Emerald crab will eat bubble algae but they are not the most peaceful creatures from what I understand, and there can be some compatibility issues so research would be in order depending on what ya have in your tank.
For the bigger bubbles, there should be a hidden stem underneath the bubble where you can just remove the bubble carefully, don't let it pop!
This is strictly from what I have been reading in the past and haven't personally had bubble algae but thought it might help a little.
Also make sure your water parameters are good and there's isn't excessive nutrients going on that might be feeding algae.
Hope that helps a little.
Also maybe you could try removing each piece of LR
and doing a SW
scrub and rinse (mix a big tub of sw
up to match your SG
and then set up a siphon or lil pump up to provide a clean stream of water over the tub drain and rinse/scrub the bubbles off and go from there)