We’ve recently purchased a Bullfrog A7 hot tub, but I’m questioning whether or not the ozone generator is working right. Every time I go into the showroom, the ozone generator is running, but I have yet to actually see a stream of bubbles running from ours. Is there a mode to put the A7 into to see the ozone generator running? Someone told me it only runs during filtering modes, but the pump is running and you never see the stream of bubbles.