Wow. Time to update this tank....
Nothing but shrimps and snails in here.. I'll add a betta in here soon. Yes, the shrimps will be good snacks. I thought some oak leaves would add some color and food for the shrimps.
The lighting is DIY, spiral CF. It's truely a low-tech tank. No ferts or CO2. It's mineralize soil but I do at a little boost of NPK, micro once in a while.