Aquarium Fan recommendations

[loicvin]

Good evening all, in preparation of a hot summer. Any fans recommendation for a Innovative Marine 40 gallons tank to cool down the tank during the day?

Have fun

 

[143MPCo]

I use a clip on style fan controlled by my apex but, no reason you can't use that type controlled by digital timer... think i paid $10 on sale at walmart.

 

[Breakthecycle2]

I have a similar one as posted above, but it's a little more powerful. Worked great on my old 90 gallon, now it's on my new 200 and still seems to work good.