Tripple this!or i double it?
4sets: CXB3590 3500K + Thermal pad + 50-2303CR + 50-2300AN + Reflector KB-D82-90RF
4pcs: Φ133*H70mm(for 50-60W)
1pcs: MW driver HLG-185H-C1400A
20pcs: 221-412
Tripple this!
You will need ~30-35w per sft., 1,8m² are 19,4sft. So I call it 20sft, multiply this with the 30-35w and you need 600-700w!
12 COB's, 3 hlg-185h-c1400 or 2 hlg-320h-C1400
You can start with one of this setups to veg and add the other two 4 COB setups later or start with a 6 COB/hlg-320 setup and add another one later.
Remember, you would need 1000w of hps for this space...