welcome back red!
My girls started to stink through the scrubber so I made up a fresh cartridge today. I didn't document how I made my scrubber so here it is from scratch.
I'm using a Vent Guard brand vent cover with a filter that I found at the local hardware store. The cover flips open to take a replaceable filter which is just some felt like material on a paper frame.
What I do is cut the outside off of one filter so it fits inside the other piece.
I use Elmers Spray adhesive which I think is contact cement in a can. Each filter piece gets a light coating, just enough to make a layer of carbon stick to it.
I sprinkle aquarium activated carbon evenly on both pieces and fill the bottom piece with the sides about 1/4". What I'm trying to do is make it so the carbon doesn't slide inside the filter when it's verticle.
Here's the bottom piece with 1/4" of carbon and the top with about 1/8" that has been lightly shaken off.
Put the top piece on the bottom piece and tape it up.
Now I took the "spent" cartrige out and got the tape off without wrecking it. The carbon was still stuck to both sides and came off with a light rub. It's now been refilled and I have a standby ready to go.
My temps are a bit higher at 30*C at the top of the box since I put the 150 and the 2x42W cfl's when I started flowering. Having the remote ballast stuck in the intake space didn't help and I had the intake and exhaust coming out the back so I'm sure there's a bit of cycling of the hot air between them. I also had the airflow blocked a bit with that furnace filter material that I was using as a light block.
I did a little mod to the cabinet that I've been wanting to do for a while. A nice piece of hard cardboard was supplied with the cabinet as a cheap backing board that I didn't use in the cab build.
Today I made an intake and exhaust duct out of it. It as fun to build because I scored all the bends on one side and folded the corners so it's a lot like a duct made out of sheet metal. Now I have the intake air coming in from below and the exhaust directed straight up.
Hey fellahs,
It's been a while since my last grow and I'm getting the urge to get one going again. I've been off work sick with a cold so I've had a chance to work on the old growbox.
I mounted a medium socket base for my 150 HPS light. Now I can run a mixture of HPS and CFL's. Here's a pic of 238W of lights in a 2 square foot area. I plan to run the 150 with 2x42 CFL's for a total of 21,400 Lumens. This puts my growbox at the top end of the optimal lighting range of 8000-10000 L/sqft.
Now I'm getting ready for seedlings and have 4 x 13W CFL's installed. I sure like the easy access to the lighting chamber for swapping out bulbs!