Dirty glass ...

[bterzz]

Ok so I decided to put a bulb in my 2nd hood today so I can start flowering soon.

I pulled off the glass and to my discovery,,, DRYWALL DUST!! AnD TONS OF IT!

I cant even imagine how much light was being blocked from my poor girls. they're going to be so happy with me!

 

[FreezerBoy]

Are you using intake filters?

 

[bterzz]

Are you using intake filters?

Noooo. I should be! Where can i get one of those things and how CFM will I lose??

The drywall dust was from building the room and drywall sanding. The fan just sucked the dust into the ducting and into my hoods.

Ive cleaned it off and I hope it doesn't come back, which I doubt it will.

How much light penetration do you think I lost?

Think I will notice a noticeable increase now that its clean?



Those intake filters sure are dirty, they seem to do the trick!

 

[FreezerBoy]

I use sheets of aquarium filter pads that I cut to size. Others use coffee filters, panty hose. The filter pad is about an inch thick uncompressed and fairly porous but, the tiny hairs that make it up are labyrinthian making it difficult for dust or bugs (see the moth in the right filter) to work all the way through. I doubt they lower CFM much at all when they're clean.

Because of my cab construction, swapping filters mid grow is a pita so I do it between grows. Every 4-6 months. Look here for further clues http://www.icmag.com/ic/showthread.php?t=100223

 

[bterzz]

Freezerboy, that is absolutely perfect. Aquarium filter pads, Vitamin B, Styrofoam pads for concrete floor, digital timer.

Thats my grocery list for tomorrow.