My main reason for setting tanks up down there was to try and get a few species spawning but now I am thinking about hillstream species tanks, my dilemma is that including the measurements of timbers for the framework I am down to around 6ft of space so what tanks do I put in

The tanks are all free so cost isn't an issue (managed to talk someone into donating them to my good cause

The options I have are:
1x4ft + 4x2ft
1x4ft + 1x2ft + 2x3ft
2x3ft + 3x2ft
6x2ft
Which would you guys go with if it was you
