Water crystals, pearls and cubes can absorb and retain extremely large amounts of water relative to its own mass. Water crystals absorb aqueous solutions through hydrogen bonding with water molecules.
These poylmers are commonly used as water retaining agents for horticultural applications and disposable hygiene products. The crystals are also supplied as a decorative, water retaining product for use with household displays of cut flowers and ...
Water dye will stay good for at least 5 days at room temperature,21 to 27 degrees celcius. It will stay good longer than 10 weeks if stored in a refigerator.
Yes , in flower food is put a bacteria killer , which help to keep the water clear. https://centimo.nl/product/postharvest-preservation-liquid-anti-bacteria/%E2%80%8B