It is generally unliked by the membership here when someone with little experience is posting new threads all over the place. It's better to post questions and learn more before trying to post advice/DIY projects and talk about things you do for customers.
I do not have a problem with you, but if nothing else, I back up most if not all of what I say on this board and I don't appreciate it when a newbie posts "bring on the facts", and "maybe with your assistance", acting like you have a clue.
I've been doing this for around 17 years and I'm still happy to say that I learn more and more all the time. You said that there is a learning curve and I'm just suggesting you follow it, rather than posting like you already know it all. There is no time line to adhere to as far as when you can post advice, but it is generally recommended that you do a little more than read the GARF website.
If you took the time to go through the site, you would see that we had a few discussions on enkamat meshwheels back in 2006. A few months after it all started up on RC. You would have also found that HD Acrylic is not really the best choice for aquariums. You would have found that you could have gotten a quality wavemaker in the FS/FT forum for less time and money than you spent on yours. You would have found that maxi mods really shouldn't be put on wavemakers. This is why your threads aren't generating interest. It's old news/improper procedures and possibly misleading to the new members who read them. A lot of care is put forward on this site by mods, members and vendors to put out the best possible information to avoid wasting money, catastrophes, and losses of livestock.
Anything further you want to discuss with me on this topic can be brought to PM.
Now, back to microbubbles. You have not answered if the bubbles are in the water column or if they are only appearing on the coral, sand and rock.
I think it is a combination of things, but lets focus on flow. You say you have maxi mods on a wavemaker. Problem here is when maxi mods are on a wavemaker, sometimes they do not restart. Sometimes when they do restart, the propeller spins the wrong way, giving you no flow. I would plug them in and ensure they are producing flow and do away with the wavemaker.
Next is your return pump. What kind of pump is it? Is it possible that it is too much for the sump to handle? Have you checked the skimmer standpipe? Also, your last baffle is very high. When the water goes over the last baffle, is the water splashing down into the last chamber creating bubbles that the return pump draws in?
Don't use a slime remover as that only treats the symptom, not the problem.
What is your fish load?