I will warn you about FFOF - It starts off great for about 1 month - then the soil spikes ... from like 6.5ph to up in to the 8 Range. dont know what causes it but watered at 6.5 every time and ended up with run off in the 7.5+ range.
B I N G Omine was down for the first month - then when i started using nutes ( I had to use PH up ) to get my water right - I believe the soil kept the PH up in there causing the prob.