looks like the consensus of this thread is that that we should not be injecting any air. so if your powerhead is fully submerged (the air inlet on the motor is underwater) then you can run without it. after the folks replied to my post, i took the tubing off completely.
- 75 gal
Amiracle SL-350 Wet/Dry (no bio-balls)
AquaC EV-180 Skimmer w/Mag 7
2ea Maxi-Jet 1200 & 2ea Maxi-Jet 900 PH
Captive Purity Refractometer w/Calibrator
LCD Digital 250 W Titanium Heater
48in Coralife 4x65 watt PC
Won Pro Heat II
Tunz level alarm
Approx. 200lbs Sand (3-4" DSB
unit - 110 GPD
Please feel free to advise me!