Moleculist
Member
Seeing your freezer grow was one of the things that first inspired me to grow, just thought you might like to know
JustEnoughForMe said:but if i do that will i be able to keep a mother ? guess not ... oh dilemas. i hate the idea of reveg.
Aw, shucks. I got's goosebumps. Always happy to be a bad influence on someone.Moleculist said:Seeing your freezer grow was one of the things that first inspired me to grow, just thought you might like to know
Here's how you can calculate the amount of ventilation you need. If for instance you wanted to keep you grow room temperature from getting any more than 5º warmer than the intake air temperature, and you were using 400 watts of power, you'd make the calculation below.
(3.2 X Wattage)÷5=CFM. In our example: (3.2 X 400)÷5 = 256
The chart below is based on the following formula. It is a well-established heat transfer formula.
---------------------------Calculating the passive intake.-------------------------
The Home Ventilating Institute recommends one square foot of open air inlet per 300 CFM of ventilation fan capacity.
If you were going to use 256 CFM, you'd want 256/300 square feet of intake area, which is 122.88 square inches.
Here are some options for the intake area for a 256 CFM ventilation fan:
1 hole - 12.5 inches in diameter.
2 holes - 8.84 inches in diameter.
3 holes - 7.22 inches in diameter.
4 holes - 6.25 inches in diameter.
5 holes - 5.59 inches in diameter.
6 holes - 5.11 inches in diameter.
Here is how to calculate the hole sizes:
1. Take the total area in square inches needed, in this case 122.88 square inches, and divide by the number of holes you want.
2. Then divide by Pi (3.14).
3. Take the square root of that value.
4. Then multiply by 2.
The answer is the diameter that each hole would need to be to make up the total area needed for intake.
A large number of small holes will create more backpressure than one large hole of equivalent area. This would be negligible unless you're using a huge number of holes or you're using ducting to supply the air to each intake hole. If you're just cutting them in a wall you should be fine using 8 or less holes without having to take into account the extra backpressure.
Don Cotyle said:
fully baked said:I had an OHaze x Skunk 1 from Sam I put outside this year. She hit 8 feet, but isn't even close to being done and the end of the season is quickly approaching. I might have to try and make some premature hash or something out of her. I did take a few clones off her this last week. Maybe I can get that SWC ironed out and get her in there. I want some nice sativa smoke...
Hey Krackpack. These gals take their own sweet time. While never documented, the last of my Thunks (Sleeping Beauty, she of the 33 day germ) flowered close to 25 weeks. Her trichs were still overwhelmingly clear.krackpack said:this is crazy i dont think my thunks are gonna make it no enough time should of started sooner
Shanti, thanks for the kind words and for stopping by. While I still have a Mom, I'm not sure I see anymore Thunks in my future. I'll certainly respond to anything here but, I've opted for a new Diary to cover my Destroyer grow.ShantiShiva said:im deffently gonna keep looking in here every now and then.....