You should not transfer more money than required. The Total Blocked Amount already includes €100 buffer, all fees, and the Additional Basic Sum if needed. If you are requested to deposit more than €853 each month by a visa authority, we need an official document from them stating the request.
If you send an excess amount that is under €1000 we are able to transfer it to your personal German bank account with the first monthly transfer from the Blocked Account If you send over €1000, this is at your own expense and we will have to use the €100 buffer to supplement the transferring fee back to your domestic account.