Must I pay for Hosting

I running a host for a week now, I put 2500 SC in my wallet, I see 60 contract count, I receive 560 gB - send 51 gB, I have now 685 SC in my wallet. Still losing SC every day… Every contract is taking SC from my wallet… What do I wrong???

Hosts lock collateral into contracts so renters can upload data, it’s perfectly normal.

https://support.sia.tech/hosting/about-hosting-on-sia

Thank you verry much :grinning: