inline fan carbon filter

Why do all my buds at the butt of all my plants look way frostier and look more ready to harvest then my top buds is that normal or are my lights to close what can it be Lower buds look ways frostier more of the pistil hairs look changes color already while top buds don’t look as frosty and...

Okay so i recently got a primaklima 125(5 inch) one speed fan (360m3/h/211CFM) but i found out its way too loud when running at full speed so i got a RPM adjustor and insulated ducting and set it to 70% speed( should be around 250m3/h-150CFM now which is good noise-wise). Okay so now im running...

Hi folks, I have a 3 x 3 x 6 tent. LED Lighting and want to scrub my air clean of odor. Smell is my main concern. A 4" mountain air at 195cfm is all i should need, but I was interested in a Higher CFM fan using a reducer to exhaust. I have 4 inch duct work going out my chimney and...