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===Underdrain===
===Underdrain===
Stormwater planters differ from full and partial infiltration [[bioretention]] in that the storage function is provided only by the [[water retention capacity]] of the [[filter media]]. As such there is no storage reservoir and the only purpose to the aggregate layer is to drain water to the perforated [[pipe]]. For this, a medium aggregate as described in [[choker layer]] is recommended as it negates the need for a separating layer to the filter media. Design details can be found here n [[Underdrains#Underdrains for non-exfiltrating practices|Underdrain]] for non-exfiltrationg practices.
Stormwater planters differ from full and/or partial infiltration [[bioretention]] practices in that the storage function is provided only by the [[water retention capacity]] of the [[filter media]]. As such, there is no storage reservoir and the only purpose to the aggregate layer is to drain water to the perforated [[pipe]]. For this, a medium aggregate as described in [[choker layer]] is recommended as it negates the need for a separating layer to the filter media. Design details can be found here  [[Underdrains#Underdrains for non-exfiltrating practices|Underdrains]] for non-exfiltrationg practices.


===Planting===
===Planting===
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