Shopping List and Review: VIVOSUN 4 Inch Inline Ventilation Fan

This is a short review of VIVOSUN D4 4 Inch 195 CFM Inline Duct Ventilation Fan. Amazon link:howgrowweed.com/BuyDuctFan. This comes from our shopping list at howgrowweed.com/2-shopping-list/, checkout our website for a complete step-by-step 2-tent build ideal for growing weed indoors: howgrowweed.com/.

[@GMT439]

This is not how to setup an extraction fan in a tent. Also you have to dump the used air outside the room that the tent is in otherwise you are recirculating used air. This will mean significant CO2 loss in the Air and that will result in slower growth and yeild.

[@MakeWeedNotWar]

Hi, thanks for the comment. The purpose of the fan featured in this video is to add some airflow and to create negative pressure in my veg tent; this helps to discourage bugs and mold. I have a separate fan taking air out of my grow room that the veg tent is in and I have a fan feeding air from another room into my flowering tents; which use the most CO2.

[@albertpinestine7195]

Does it have it on and off switch or just plug in and it goes?

[@MakeWeedNotWar]

Just plug in

[@MakeWeedNotWar]

Just plug in

[@randomdude189]

It’s a ripoff waste of money