Making a canopy - fan cfm?

[Myka]

I found some Nidec Beta V brushless fans at Princess Auto for like $3 each. They are 12VDC (I bought an adapter to wire on), 0.29 amp, and apparently 43 cfm and 36 dB. 36 dB sounds like a lot, but I wired one up to the adapter and it's a heck of a lot quieter than the fans that are in my Degenbao fixture!!! Anyway, if I have two 43 cfm fans, one sucking into the open top canopy, one blowing out is that significant or should I look for some bigger fans? It doesn't feel like it's moving much air.