I'm getting my hands on an 8x4 for free. I was wondering first of all about lighting. I was thinking 2x 600w Zeus pro. Would this be efficient enough? I'm hoping for around 40oz minimum. How many plants to achieve this? I think I'd prefer to grow in 20litre pots and have less plants than small pots with more plants. The seeds of choice are fastbuds blue dream and northern lights. Will these grow large enough. Anybody have any experience