As avoids the water plant in flowerpot from determining phase Change water Time, and the normal Sui of sand soil Time write water outflow in basinWill Su Rubber flowerpot Zhou Wai Open Kou , And are embedded in Sha Net , And, and Hua Cover, trip, controllable water flow outflow , Tou Over Sha Net, Let sand Bei Over Filter no longer flow out , Da Dao Over Filter, convenient effect in flowerpot Shang Fang Installed Shang basin Inner, outside.為避免花盆中的水生植物定期換水時,盆中砂土時常隨著水流出;將塑膠花盆周圍開口,並嵌入砂網,並在盆內、外部上方裝上滑蓋、卡榫,可控制水流流出,透過砂網,讓砂土被過濾在花盆中,不再流出,達到過濾、方便的效果。