Hi, I have had my 240 litre tank up and running for 4 months now.
It has an external 305 filter. It's also heavily planted.
I added 6 new fish last weekend ( my lfs said this amount wouldnt cause a minicycle..well it did! )
My stats are
amonia:0.25ppm,
nitrite:0ppm,
nitrate:10ppm...