This water softener tank size chart [sizing chart] recommends the best water softener tank sizing and resin capacity chart with an average water hardness of 10 GPG.
|Gallon/Day||Grain/Day||Grain/Regeneration (1 Week)||Softener Capacity (Grain)||Resin Tank Size (Cubic Feet)|
|300||3,000||21,000||24,000||1.0 or 1.5|
|400||4,000||28,000||24,000 or 32,000||1.0 or 1.5|
|500||5,000||35,000||32,000||1.5 or 2.0|
|700||7,000||49,000||48,000||2.0 or 3.0|
|1000||10,000||70,000||64,000 or 80,000||3.0 or 4.0|
- We take an average water hardness of 10 GPG (for hard and very hard water)
- We recommend regeneration is 1 week for the best performance.
- It depends on your water hardness and your demand of water-consuming to have a properly water softener tank size chart.