1000 watt HPS, cooled properly with adequate circulation kept less than 10 inches or closer to the canopy makes the BIGGEST, heaviest, densist, BEST BUDS... no DOUBT

With maybe a rare exception of teaming up 600watt HPS bulbs on a SOG..

400 watt hps is not even in the same LEAGUE as 1000watt.. NOT even close..

It's like comparing my KAK to YOURS...
you can decide who is the 400 and who is the 1000

I love you


AND NOW YOU KNOW!!

: )