I am also in similar situation i have faucet giving 100 satoshi every 10 minute and now i am throwing away 100000 satoshi per day but my income from all of the faucet referal is around 20000 only and from ad its better not to count. I don't think these days running faucet is profitable if you don't already have large traffic.
It's all about being creative with your traffic. Going the plain ad route won't get you decent profit unless you purely have top tier country traffic (US, etc). For example, you can capture your visitors' email addresses then run an email campaign afterwards, or simply sell your list.