That is a really nice light, I had one on order a while ago and got tired of waiting to I bought a SF 2000 instead. That was a mistake, not a bad light but not enough for a 2 X 4 area. 

I tried using just hydrotron but I dont think I was flooding the table enough or maybe it was too much, when I tried with just rockwool and hydrotron I am sure it was too much flooding, Rockwool holds on to a lot of moisture. 

Seems like ebb and flow and SOG are the right combo to get the highest yields in the smallest spaces so you got my attention, post often.