The main issue I had was that I couldn't get Nit/Phos to rise above 0, which led to a cycle of dinos & cyano. I finally have it in check, and measurable amounts of both. No cyano or dinos any more, but I still see some diatoms on the sand here or there at times. What finally fixed it was a combination of adding pods, daily phyto, and dosing Nit/Phos manually. Everything is now healthy, and my corals are growing fast. The only issue is I don't yet have any coralline algae growth, but my parameters are where it should be growing. I guess it will just take a little more time.
Thanks for explaining your setup. With no filter media or skimmer or anything, do you find the chambers collect much detritus? As for the Hygger, I have the same wavemaker. I've just read of others finding over time that the magnet side swelled up and started leeching if they had it submerged. I once tried sealing it inside a ziplock bag and submerging, but the bag ripped and I didn't risk it again.