Bottle gardens and terrariums are one of the easiest ways ...

(brand) lights are also good. Ventilate your container. by leaving the lid slightly ajar for a day or so and if excessive mist forms on the glass or mold begins to form, it needs fresh air. Remove the cover for a few days or leave the glass lid slightly ajar - prop it open with a piece of wood, eraser or similar. Mold ................
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