They build mufflers. But I have a 465 cfm fan and it is super quite.
Depends on the brand.
The hoods I'm using now are are cooled. They belong to Zandor. Thx Z!
I hooked up my fan to one light. And it stays so cool under this light. It blows my mind. 76 right under the light! The plants are loving it. Growing the fastest I've ever had MJ grow!
Cool Tubes it is then...I think if your using more then one light. Cool tubes are way more efficient.
Jdog7000 Reviewed by Jdog7000 on . Cool Tubes Vs. Cooled hoods... I am thinking about using cool tubes in the future. And what I was wondering is how many lumens do you lose threw the glass tube compared to a regular cooled hood. Is it the same. I heard the cool tubes lose more lumens. But that sounds like bull to me. Because it seems like you could get a cool tube really close. Like inbetween the plants. And standing upright and connected together. Fuck it I'm going tubing!:thumbsup: Still would like to hear anyones opinion who used or uses them. Rating: 5