^^ That is spot on.
I just did the math real quick, the current network stake weight is just over 900k, so on AVERAGE 1k radium should earn you between 1 and 1.5 radium a day. Now, there is a TON of variance, so it may be a few days to earn a reward, or you may get two in one day. If the network stake weight changes ( which it often does) then the numbers above are no longer valid.
JJ
i have 2700 radium, i get 3 radium a day