SpacePoolの説明です。コピペはこわいが敢えてコピペ。

@everyone

We have just crossed the hardfork block and stats will appear strange over the next 24 hours.
* The total netspace appears to have dropped by 50%, this is expected and will recover once the blockchain catches up with the plot filter change in about 24hrs
* The pool netspace **and your farm size** will experience the same 50% drop for a day
* Your farm size appears 50% smaller but so does everyone else's and therefore your reward share will remain the same