I'm still confused about how this is 'upside down', but it looks cool, and Hara jerdoni is one of my favorite catfish species!
Look it up on Youtube, there are really nice videos which explain the principles behind it. My lights were DIY with CFL bulbs, nothing fancy. I have a couple of old threads on this topic, if you care to look them up
That is so awesome. I've got a few questions. I would like to make something similar for just a betta maybe about 2 or 2-1/2 gallons you wouldn't happen to know the measurements I would need on that and also would it need a filter if so just a small one on the bottom tank work? What else would I need
Also water changes. I would have to do water changes quite often how would you do this. I'm assuming if you remove water from the bottom tank it would lower the level of the top how do you get the water back in
Thanks, good link