flow restrictor (ro/di)

[reefwisher]

Do you have to adjust your flow restrictor to your water temp? For instance summer/winter and if your water ratio changes good water/wastewater?

[AZDesertRat]

As water temperature changes the waste flow changes. It is good to have either two flow restrictors or an adjustable one if you get big swings in temperature. You want to stay as close to 4:1 as possible for best membrane life and production rate.