If Octopus Agile electricity price is low run my Tado hot water

When my Octopus Agile energy price is below x pence per kWh for at least y thirty-minute periods then run my Tado hot water. Set your own price threshold and also how many 30-minute contiguous periods you need for the water to fully heat up. Check your bill for typical prices such as 9 pence overnight and 15 pence in the afternoon as setting too low values will result in no hot water.