What size HPS to get?

[mercilus]

i found inline duct fans at homedepot.com for 34 dollars for the 6" variety

I think I may have seem something similar at our local lowes here.

Take a look at this guy.. It is what I am considering buying.

http://www.hydroponicgarden.net/content-product_info/product_id-1204/6_inline_duct_fan.html

About $20 more but should be quieter..and maybe more powerful? I have not owned one of these but it seems the right price for my cabinets light cooling needs.

Then I will use about 3 of these to cool the inside of the cabinet on a thermostat.

http://www.newegg.com/Product/Product.aspx?Item=N82E16835185054

133 CFM for only 9.99 +SH... Great deal IMO

Three should handle venting the cab I imagine but if not... I will get a few more...

 

[bigjesse1922]

I think I may have seem something similar at our local lowes here.

Take a look at this guy.. It is what I am considering buying.

http://www.hydroponicgarden.net/content-product_info/product_id-1204/6_inline_duct_fan.html

About $20 more but should be quieter..and maybe more powerful? I have not owned one of these but it seems the right price for my cabinets light cooling needs.

Then I will use about 3 of these to cool the inside of the cabinet on a thermostat.

http://www.newegg.com/Product/Product.aspx?Item=N82E16835185054

133 CFM for only 9.99 +SH... Great deal IMO

Three should handle venting the cab I imagine but if not... I will get a few more...

The inline fan in the first link is just as powerful as the one at homedepot
.com for 35

 

[mercilus]

I am seriously considering scrapping the cabinet and just using the whole room...

Im afraid the 600 watt hps will be too much for the cabinet.

Probably will be a lot easier to keep cool

 

[weedyoo]

cheepest 400 i have found


http://www.insidesun.com/Super_Economy_400_Watt_MH_65a26e.item

 

[OregonMeds]

If you just DIY cooltube it you would be fine. You'll want a good fan for the cooltube, maybe "solar and palau" they are the best I've ever seen. That and a $20 bake a round.

Cooltube, a couple small fans for air circulation and second small exhaust and you would be fine.

You can't just grow in the open without a light sealed area or you won't be able to flower properly.

 

[mercilus]

If you just DIY cooltube it you would be fine. You'll want a good fan for the cooltube, maybe "solar and palau" they are the best I've ever seen. That and a $20 bake a round.

Cooltube, a couple small fans for air circulation and second small exhaust and you would be fine.

You can't just grow in the open without a light sealed area or you won't be able to flower properly.

I already have a bake-a-round cooling a 150 Watt HPS.

What size CFM do you think I will need for cooling the light sufficiently with its own air intake? 170+ ok for the cool tube or should I jump to the 250+cfm fans?

 

[GypsyBush]

I already have a bake-a-round cooling a 150 Watt HPS.

What size CFM do you think I will need for cooling the light sufficiently with its own air intake? 170+ ok for the cool tube or should I jump to the 250+cfm fans?

If you are using CENTRIFUGAL fans, that do not loose CFM easily, I would say that 170 CFM is ok for one light...

The problem starts when people try to use duct fans... they are meant as boosters, the rating they have is what they allow to pass without restriction...

One of those 4" 80 CFM duct fans will allow 80 CFM to pass by it without any restrictions.... if you are pushing more than 80 cfm, that fan will cause an restriction...

It may even push 80 CFM by itself... if you add an inch of ducting, you will loose a lot of grunt...

Al B. Fuct cools 2 x 1000watt HPS in cooltubes with a 200 CFM centrifugal fan....

My suggestion would be to get one of the 4" centrifugal blowers, like this one...

But that is just MY opinion... go with what you know....

GrowBright 4" Inline Fan

 

[mercilus]

Great thanks for the info.

Another thought I had would be to mount the light completely out of the box.

Cut a square out the size of my hood and mount it in. This shouldn't be difficult to cut since I made my cab out of some plywood. This will give me an extra 7+ inches to grow in height as well.

If you are using CENTRIFUGAL fans, that do not loose CFM easily, I would say that 170 CFM is ok for one light...

The problem starts when people try to use duct fans... they are meant as boosters, the rating they have is what they allow to pass without restriction...

One of those 4" 80 CFM duct fans will allow 80 CFM to pass by it without any restrictions.... if you are pushing more than 80 cfm, that fan will cause an restriction...

It may even push 80 CFM by itself... if you add an inch of ducting, you will loose a lot of grunt...

Al B. Fuct cools 2 x 1000watt HPS in cooltubes with a 200 CFM centrifugal fan....

My suggestion would be to get one of the 4" centrifugal blowers, like this one...

But that is just MY opinion... go with what you know....

GrowBright 4" Inline Fan

 

[GypsyBush]

Another thought I had would be to mount the light completely out of the box.

Cut a square out the size of my hood and mount it in. This shouldn't be difficult to cut since I made my cab out of some plywood. This will give me an extra 7+ inches to grow in height as well.

Smart...


I like it when people think outside the box... lol...

 

[mercilus]

Now to figure out two strains I like.

One sativa dominant and one indica dominant.

For work and home =)

 

[fat sam]

go with the 600, they have almost 2 times the output of the 400s, a few of my plants are about a foot away from the light so i keep a fan blowing at all times and have no problems

 

[mercilus]

go with the 600, they have almost 2 times the output of the 400s, a few of my plants are about a foot away from the light so i keep a fan blowing at all times and have no problems

Thanks for the confirmation. I was getting worried but I think I can handle the heat.

I actually will probably not be growing in the cab anymore though. Spoke with the wife today and negotiated a way to have a whole room dedicated to growing =)

Very happy because I can grow some tall sativas.

Plus its right next to my electrical box so I will have easy access to power.

I just hope I can find a converter for this guy so I can run my 240v ballast

 

[Jash1297]

Nice! Nothing like a whole room!