entry #4:
Checked the ATS last night. The surf4 has some more green and purple speckles of algae growing. The hog3 has some algae forming on the sump glass, but still none in on the material in the scrubber yet.
The air pump has been relocated to the other side of the wall, getting the noisy thing out of the stand. The tubing run is aprox 18' long. I added thumbscrew style air valves inline just upstream of the scrubbers for ease of tuning the air bubbles. After tuning they are all bubbling great with little to no visible effect by adding the many feet of extra tubing.