There not bullshitting me it's what there website says so there bullshitting everyone..Doesn't really matter does it.. like I said if the smell is gone its good to go
... but worse they are not as efficient if you just hand fill them. they do some kind of vibration while they fill the carbon which lets it settle together perfectly.
Herb,
What size Phresh, what size grow area, what size and cfm fan are you using? -granger
if you get a year out of a filter with continuous use, you should more than be able to afford a replacement, I would replace every year just out of safety and overkill, whats $180 for a years worth of peace of mind?