Im thinking that i want to give my betta more space. Im thinking of using some type of plastic tube, cutting a hole in his plastic bowl, cutting a hole in another plastic bowl and connecting with the tube, then connecting the tube to the bowls with aquarium silicone. One will be the flat on two sides one, but his current one his round. Will this safely work? I can only imagine cleaning it, it will be so much harder. I just need answers on this, no fish care responses etc. if you do i will report you for not answering what i asked.
Look up water brige, use a very wide tube, like 5 inches or more, get a filter heated 5 galllon tank for both sides of the tank set up.
report me, for not answering what you wanted lol idc
Search, 'Aquarium Water Bridge' You may be able to adapt that to a small size, but just make sure that it's more than enough room for your betta as fish are notorious for getting stuck in them. Maybe 2 inches wide and deep? I'm trying really hard not to say anything about fish care... Hope I helped.