We have developed a new tray where there is an immersion (Swamp), which allows us to drain the tray. This is done by purchasing a plug and drilling a hole. It is a great advantage to be able to water abundantly if the terrain is sloping. Thus, all plants can absorb the water they need, after which excess water can be shut off. The same is true if there is a period of heavy rainfall. Then you can refrain from inserting the plug, and the plants will therefore not be watered. Smart and simple.
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