I have herd some good things about them. With the 4x4 units I have herd of people using 1k set upsfor the best light penetration. The hut is 16sqf and that is 800w at 50w per square ft. You could get a nice lumen output with 1k. Heat is always an issue with a 1k because like with any light you want to get with in 18 to 12 in IMO to get the best light penetration.
If you want to go with the 400w I would look at the smaller unit, the hydro hut mini.
Adieu
BlueBear Reviewed by BlueBear on . Hydrohut experience? Anyone ever used a "hydrohut" for growing. They have a 4x4x7'h unit that is perfect size for my needs. Also curious, do you expert cab grow folks thin k I can use a 4oo HPS cooltube w/ active intake and exhaust fans or will the heat be too much. The "hut" would be placed in a fairly cool room, temps about 75 degrees. Btw, gotta say after reading so many posts, the cab growers are so effin ingenius! Keep up the good work! Rating: 5