marc206

So you hook up the co2 to regulator then to the rio 800s spare airline port?

I have a half cut 24 oz gatorade bottle upside down in my fluval edge 6 gallon all newly planted with all of the plants pearling only needing to fill the co2 twice a day. Still tinkering around with the surface area to diffusion for the 20 gallons and up.

It's in the photo. A soda stream Co2 machine connected to an airline.

Oh ok I see what you mean. I have already figured that out. Just use aquarium coop tubing. Then stick a 2mm bendable aluminum wire. After that I just twisted the tubing with wire in it around a random stake I had sitting around. I use the same to fill up my passive system. See photo.

We need a bigger surface area. I have been thinking about this for days. I'm glad to find that someone is pondering the same thing.