Hi kohray,
Welcome to RSM world..... :lol: !
For me, the MicroBubbles(MB) come from stock skimmer so I replaced to Tunze 9002 then problem solved .There are a few thingy that may cause MB such as too low water level at the last chamber, skimmer, 2 return pump, black sponge and the stock filter media. You have to isolate individual item to rectify which one is the culprit before countermeasure .
Regards to IFS system, it will not solve the mircobubble issue but instead doing the 1st layer filtering so that the debris will not struck/jam the skimmer pump and also purifying the water by the active carbon locate at the 2nd layer.
There are many world RSM reefers gathering at ReefCentral which they also facing MB issue and they do providing personnel experience for solving MB issue .
I would suggest you visit reefcentral to learn more and happy reefing