Damn that’s pretty perfect. For simple budget, anyways. Wood or metal makes it last longer, but I do really like the grates.
I’m curious on your light blocker now, you have a link?
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More microgrow sized…
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Yeah… I was curious if it could be so simple as to make a long black tunnel essentially, with only 2 turns. Glad do see that worked for you, might do something similar.
My grow is only 3x3. Not tremendously big.
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Usually just the 180 with flat black interior is enough. At least that’s always worked for me.
But I haven’t gotten into tents in the middle of a room so far 
my intakes are always in unlit areas anyway.
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Oh, the basement is unlit at night and I’m blocking the windows, all pretty dark. But I’m adding a second tent, and better safe than sorry anyways.
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With two tents in a dark space only one needs to be lightproof 
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Better safe than sorry; I don’t trust my family 100% not to turn the basement lights on during the time I carefully schedule for dark periods so there is no reason to need to go down there…
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Just cut it to size and tape it over your intake.
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seen one similar on a woodworking page, guy made one t deal with sawdust,he used multiple 1" think furnace type filters
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