+1 with temp at 28. You can drop it down to 27 with a big water change as well to help simulate their natural environment.
Cave size shouldn't be an issue at all, they love a tight fit. But definitely reduce the number of caves. I like having the cave close to other driftwood so that the females will hang around naturally.
I've never had an issue with lighting effecting breeding but that's just me. Plenty of people online on both sides of the lighting argument.
- Frontosaman likes this