Right now my regulator is temporary so I don't have a bubble counter. I have it adjusted so the drop checker is green, 7hrs a day.
1. I don't have a co2 reactor but an atomizer in the tank. The reactor is where I inject air so that I don't gas my fish. Also my eheim 2213 does work but the flow was too weak which is why I have the mag drive hooked up. The flow was non existant.
2. If I was you I would continue to use the 2215 and just turn down the flow. The 2213 is waaaaay too weak.
I misspoke, I have a 2217...thinking of going down toa 2213 or 2215. Leaning towards the 2215 at the moment.