dividing 10 gallon tank

Hey guys! I was planning on getting a 10 gallon tank soon to divide in half, as an upgrade for my little girl, Johanna, as well I'm planning on getting her a boyfriend ;). Now, I know about the craft mesh method, but I was thinking of something more sturdy, something like glass or tinted...

So I recently got myself a 10 gallon which I divided for 2 of my male bettas. They've been in there for 2 weeks now with no problems, until today. My baby Opal started shredding his caudal fin this evening. I have not witnessed any flaring or aggressive behavior from either fish, even when...

I want to divide my 10g and i have a few questions. Should i use clear plexiglass material(or tinted) or just have it opaque? i would like to see them flare at each other OCCASIONALLY and witness their temper and flexing but i wouldnt want them tiring/stressing each other out 24/7(y i mention...