A predictable solo mining pool allows you to do pooled mining with a solo mining payment scheme. This means the miner who contributed the most work to the pool will receive the full reward of the next found block (or uncle) and his work account (credits) will be reset to his current credits minus the credits of the runner up miner.

Check the credits page to get an estimation how long it will take for your address to receive your next full block reward: http://ethpool.org/credits

Also you will find an indicator on your balance page (time to next block).