So the usual story of having a larger tank and a divider for two bettas remains strong here. Tee divider is transparent with a bunch of little holes. The PetCo employee said that their vision isn't the greatest and it shouldn't be a problem (you see where this is going, right?). So I put everything together, and Tristan and Vlad were fine. I left for work and came back with no problems.
Well, this morning, Tristan was chilling by the divider, and Vlad saw him and went NUTS. I have never seen my boy flare up like that to anything other than his mirror toy. Tristan didn't seem to care at all. So as a precautionary measure, I moved Vlad back to his old bowl with the little pad heater until I can get back to PetCo for some fixes (as well as get a bottle to make a baffle for my filter).
So my question is this. I thought that maybe I could get one of those aquarium wallpapers and cut it to fit the divider to avoid any further stress to Vlad. My only concern now is that the water from the filter wouldn't reach the other side of the tank. Would this idea work if I poked holes through the wallpaper? My only problem there is I don't know how consistent my holes would be with the divider's, and I don't know how much would allow appropriate water flow.
If that's not the brightest idea, what are some other suggestions? I thought some tall plants would be good, but I still have this irking feeling that they'd still spot each other from time to time. Are there any plants (preferably fake; I'm still new to the aquarium business) that would work well and still allow substantial flow of water through the divider?