[helene schoubye]

I am sorry, – I am getting things a bit mixed up, I apologize 😉 -its a bit confusing what I wrote. I meant that 27 liters is a good size for a smaller group of paros or a pair.
But I am not sure its an ideal size if you also want to have boraras in that tank, it could be bigger then – though I think it is possible.
The size of your tank, 30x30x30 is a good size though, and I would think it is possible to have maybe 8-10 boraras, if you choose that.