I've been very pleased with the Cascade washer from Summitek. Their 11x14 size, which handles (if memory serves) 15 11x14s or 30 8x10s, uses only 250 ml/minute. A 16x20 version is also available. They permit adding "dirty" prints downstream of those already washing without contaminating the earlier ones. Summitek has a Web site with details. My only connection to the company is as a satisfied customer.(posted 8360 days ago)