air bubbles in closed loop and scwd output

[NaCl_H2O]

Is the bubble output bad for Tank? That is I guess sort of a newbie question isn't it?

Some say microbubbles are bad for SPSs, but I read a post from Instar/Larry awhile back that disputed this? Mostly they mess up the visibility in the tank and cause bubbles to colect all over your substrate, etc.

FYI - You don't necessarily want to get BIGGER (GPH) pumps, just better quality pumps. In fact, my MAG7 pumps cavitated MUCH worse than my MAG5s.