Hi All,been growing about 2 years hydro ,DWC Buckets,Large Stone in every bucket,1.5" flow through design,turns the nutes over every 2 hours,24/7 drip rings in Hydro,been doing great ,close to 1.5 gms. per watt on my last grow. For this grow I have swapped out my 1k on a light rail for 2 1ks now...