MARS HYDRO 6 Inch Inline Fan and Filter, with Temperature and Humidity Controller, and 25 Feet Ducting, Exhaust Fan for Grow Tents, Hydroponics

Does the job but very noisy compared to rvk, the auto function does not allow for a minimum fan speed to get negative pressure on a tent some once it's cold the fan just stops. Also when it's hot the fan will never go above level 5 out of 10 to cool it down... I have an RVK that's 10 years old, with a basic fan controller you can forget about it and it's no more noisy than a quiet hum

Do not buy doesnt work at all

Bluetooth doesn't work 😕

VERY VERY NICE!!!!! Thank you!!!! Love the digital controller!!!

Good fan and controller. I use it in a 4x4 tent and clears the tents oxygen really well. Only on for a about 30 seconds every 15 mins or so. It's loud after the 3rd speed setting but can't complain as it works great

great product; works well

Ist sehr effektiv leider etwas lauter als er hofft aber man kann ihn ja auch auf unterste Stufe laufen lassen da er so effektiv ist.

I've only been testing this fan/filter for a few weeks, but so far I'm very happy. It moves a ton of air in my 4x4 and the fan (which I installed inside the tent) is decently quiet when cranked up to max settings. It was very easy to assemble and install, and I have no experience with these kinds of things. I did opt to seal the ducting with aluminum foil tape in addition to the hose clamps -- the tape needs to be bought separately. That said, I don't know if that's even necessary. The smart monitor is REALLY nifty. Tons of settings to automatically adjust for different scenarios when certain conditions are met. When I thought I had a problem with the monitor (it was actually just me being dumb though) customer support responded to my question in a few hours. Really can't complain! I'll try to update a year or so down the road and let you know how well it ages. In the meantime though, I'm a happy camper..