One way is to use a needle wheel skimmer pump inside the sump, the co2 line goes in the ventri port, an output tube can be routed to whatever chamber you want to minimize micro bubbles. It's a very simple and effective way to add co2 in large tanks. I use a Coral Box DCA1500 with needle wheel package on maybe 20% power.
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.