I still think you go in wrong direction with this insane referral commission, you need to attract users who only claim on faucets and you not do that by giving 20 satoshi/1440 min. Also AdSense on faucets in very bad idea, they will ban you sooner or later so better look for some other crypto friendly ad networks.

I do not know why you use FaucetSystem, most faucets are using FaucetHub these days - this service can offer you much more then FS, especially as regards to promotion and security of faucet.