Well it's been about 10 days now. Here are the readings.
nitrite not quite 0ppm, but not at the .25ppm mark yet.
nitrate 0ppm (YEP)
Not going to test again till next week. It's doing it's thing. Just to dam slowly.
Anyway, havent had time to put much thought or try anything to reduce the micro bubbles. Tuesday im gonna head on down to ACE & install a TEE in the return line. Kick some of the flow back to the intake chamber, also adding in 2 more tees for expansion (wish list includes a chiller, reactor & idk). Also gonna buy some Filter pad to wedge into my baffles. Might get around to making a spray bar, unlikely, as im happy with the 3/4" outlet.
If all else fails, i will try reversing the flow of the sump (instead of left to right, i will try right to left) Beyond that, A filter sock. If that doesnt work. Tear down the sump & try again.