... soil, water bead, water gel, marble pearl, photo pearl"MARBLE PEARL"is a kind of round shape ... nitrogen, phosphorus, potassium and others.2) can be used as long as 2 years3) It can absorb water ... expansion it lookscolorful and brilliant4) It is widely used to decorate your indoor plants, to keep your flowers ... bagHard box 20g/color box. marble pearl, photo pearl, crystal soil, rainbow clay,hydro gel