TopoGrow 8" Inch High CFM Duct Inline Fan with 8" Carbon Filter 8"*25FT Ducting Clamps Combo for Grow Tent Ventilation Kit (8" Fan Filter Kit)

This review is for the TopoGrow 4'' Inline Fan with 4" Carbon Filter Ducting Clamps Combo+Variable Fan Speed Controller + Humidity Monitor + Analog Timer for Hydroponic Grow Tent Ventilation (4" Fan Filter Kit+Accessories)The fan is very stable and heavy and reasonably quiet and I appreciate the fact that this fan has two feet on it for stability without having to attach it to something. The controller is very handy and works very well. I have been using this fan and accessories for about a month or so now and am very pleased with this purchase. The carbon filter that I received initially was defective but after I contacted the seller they immediately sent me a replacement very quickly. I highly recommend this kit for an inside tent grow room. This kit can be configured as an exhaust or an intake fan and comes with good instructions for the various configurations of installation that you can use this kit for. My grow room tent is 2 feet by 4 feet and this fan is perfectly sufficient for me. I appreciate quality products and excellent customer service and both is what I received with this purchase.

Carbon filter was not at all effective in minimizing exhaust odor. Had to purchase a different brand to address the issue. Had two of these units and neither was effective. The second filter I had purchased from them came with a dirty cover and was equally ineffective. The timer is wanky as hell and has to be shimed in place to function. The hygrometer only works in the location of the unit. I need to know the humidity inside the tent while being able to view status outside the tent. This unit doesn't do that. Took several months and several units to figure it out. Directions are in broken English and are not helpful. Fan and speed controller work but are not controlled.

Love it will be buying more maybe a bigger one next time

The timer comes with no instructions of any kind. The variable speed controller only works for the upper 1/2 of speed as the starting power requirements of the fan needs a higher starting power amount. Otherwise its a great value. Neither of these issues of any real substance.

I am glad I purchased this product. I installed this inline fan and filter in a few minutes. Ten months later I have experienced no issues.

Growing cactus and other succulent plants under lights using the Topogrow Analog timers. These timers appear to be more dependable and safer than using regular home light timers from hardware stores. We've had a few other kinds of plant light timers short out during use, but so far the Topogrow timers are showing themselves to be a safer choice.

easy fit. compact. as advertised. all components were shipped undamaged. only installed for several days, but so far everything is working as i thought it should

Works as advertised, bought this and a digital one and this one seems to work better then the other.