Defusing The Sound of air flow

Originally Posted by Michael Phelps

Im currently running a cab, 3 1/2 feet wide, 6 1/2 feet tall, 2 feet deep.

Im running a 400w mh/hps cooltube depending on vegging or flowering.

Im also running a 435 cfm squirrel cage fan to exhaust the cab through the cooltube.

Ive already sound proofed the fan itself, i built a sound box for it and insulated the inside of the sound box with foam sealant and several old t-shirts and an old blanket, it works great. The only problem im having is fan itself produces so much airflow that my box itself is quiet but the air coming out of the back is def not.

Anyone know a good trick on defusing the sound?

I really need some help with this please

you can get a muffler which they sell everywhere. you could use insulated ducting or tape on sleeping bags and shit over your current ducting. also consider a fan speed controller if your temps are in check.

straighten your ducting as much as possible too

Originally Posted by renyman

you can get a muffler which they sell everywhere. you could use insulated ducting or tape on sleeping bags and shit over your current ducting. also consider a fan speed controller if your temps are in check.

straighten your ducting as much as possible too

Agreed, insulated ducting works great to muffle air flow.

Give the "Shhh, your neighbors can hear you" thread (it's a sticky, I believe) a read - real good info in there.

Originally Posted by Bob Smith

Agreed, insulated ducting works great to muffle air flow.

Give the "Shhh, your neighbors can hear you" thread (it's a sticky, I believe) a read - real good info in there.

Thanks ill def try that, ive actually read that thread quite a few times, thats where i got the info on building a sound box for it. (the sound box works great, the fan used to be so loud you could hear it anywhere in the house, now its so quite you can put your ear up to the wardrobe and you cant hear anything except all the airflow coming out the back)

Originally Posted by renyman

you can get a muffler which they sell everywhere. you could use insulated ducting or tape on sleeping bags and shit over your current ducting. also consider a fan speed controller if your temps are in check.

straighten your ducting as much as possible too

I was thinking about just getting another fan and having the cooltube on its on ventilation and the box on another.

The problem ive noticed is, the 400w seems to heat up my entire room from all he air being exhausted out of there, i live in the denver area so its quite cold outside and if i keep my window open about 6 inches my room still stays a nice warm temp because of the light.

Have you ever experienced this? I mean i knew a 400w would produce more heat, but i def didnt realize it would produce as much as it does.

Originally Posted by Michael Phelps

I was thinking about just getting another fan and having the cooltube on its on ventilation and the box on another.

The problem ive noticed is, the 400w seems to heat up my entire room from all he air being exhausted out of there, i live in the denver area so its quite cold outside and if i keep my window open about 6 inches my room still stays a nice warm temp because of the light.

Have you ever experienced this? I mean i knew a 400w would produce more heat, but i def didnt realize it would produce as much as it does.

I have a 6" inline dedicated to cooling my light, and another 6" inline hooked up to my filter for exhaust, and a 4" inline for intake.

Having your light cooled by its own fan is a necessity, if you wanna enrich with CO2.

Ya and i do want to do that at some point once i get a couple grows under my belt.

Well thanks for all your help

Originally Posted by Michael Phelps

I was thinking about just getting another fan and having the cooltube on its on ventilation and the box on another.

The problem ive noticed is, the 400w seems to heat up my entire room from all he air being exhausted out of there, i live in the denver area so its quite cold outside and if i keep my window open about 6 inches my room still stays a nice warm temp because of the light.

Have you ever experienced this? I mean i knew a 400w would produce more heat, but i def didnt realize it would produce as much as it does.

Some tips on keeping heat down is to pull the air going across the bulb from somewhere else(outside, another room, outside a tent). Also keep a good sized oscillating fan blowing across the bottom of your cooltube. I stack mine on boxes and keep the stream blowing right underneath it. It really helps.

the best way to keep it cool is to make sure you are reall exhausting that hot air out of the grow room. I tried all diferent setups and it making sure that the air was pumped out of the room made all the diference. It makes so much a diference that now in winter I can run my 600 bare bulbed with no cool tube and just pull all the tent air and dump it outside. It makes more a diference than you think.