Hmm seems like the female is not interested in mating and just hangs out at a corner of the tank. I noticed that her tail and a little bit of her dorsal fin is ripped probably because of the male trying to get to her. Is there any possibility that he will kill her while doing this? What happens if one of them die, will the one left over choose another mate?
Also, I want to know what leaves I can put in my tank to lower pH level. I know driftwood can do that but is it permanent? Will the pH rise again after water change etc. I know a constant stable pH is more important but I was just wondering.