ZnSe thick layer growth was investigated by two methods: (1) the yo-yo solute feeding method in which ZnSe solute is transported by the difference in density between the solute and ZnCl2 solvent, and (2) repetition growth by alternate supply of saturated solution in a tipping furnace. The temperature modulation range is typically between 700 degreesC and 600 degreesC. In the yo-yo process, downward transport of ZnSe was clearly enhanced, and the grown layer on the lower substrate was thicker than that on the upper substrate by three times. In the repetition growth with very slow cooling rate of 0.2 degreesC/min, 250 mum thickness was achieved after five repetitions.