How many XSPEC do you have to own to get stake rewards on a regular basis? I know there is no minimum, but if you have a low amount you have to wait a long time.
With currently 5% p.a. it can be calculated with some math.
Though it depends as well on the network weight, which usually is settled at ~10% p.a.
Meaning. if you have 5000 XSPEC, you get around 500 XSPEC a year. The current staking reward is 2.xx XSPEC.
Which gets you to about 250 days of the year to earn rewards..
However, v3. will introduce fixed staking rewards for SPECTRE (=3) and XSPEC (=2).
For the eventual % return of each, please have a look at this newsletter.
https://www.publish0x.com/spectrecoin-xspec-official-blog/spectreco-newsletter-march-2019-xzrxx