Which size small fan for terrarium?

[Sudhira]

Hoping for some help. I have an old SeaClear acrylic aquarium that I am converting into a terrarium for mini orchids. I am having a hard time figuring out what size small fan I should get. Looking for recommendations.

Many thanks.

[Mr.Fakename]

What size is your enclosure?
I rigged a simple, old computer fan in a 90x45x45cm terrarium, and it gets the job done.

[Sudhira]

Oops, here are the dimensions: 23 in L x 11 in W x 19.5 in H

[harpspiel]

Originally Posted by Sudhira

Oops, here are the dimensions: 23 in L x 11 in W x 19.5 in H

Personally, I think placement will matter more than size in this case. CFM also matters more than size, but for a small tank like that I guess I would say a 60 mm/20 CFM fan would be fine.

With an aquarium conversion, you might have ventilation and circulation issues so I would actually recommend putting it near the bottom of the tank and running it most of the time.

[Sudhira]

Sounds great, thanks for your help.

[Draikan]

You may also want to point the fan away from the plants. Point it down, or forward at the glass. This way the plants only get a gentler indirect airflow.

[Sudhira]

I found these, and using just one is working out well. https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1