Adorama Developing Tanks and Reels Stainless steel tanks and reels have long been the professional's choice. With Adorama's stainless steel tanks and reels desired temperatures can be easily obtained and maintained. They will not warp or corrode. The PVC caps are light-tight, easy pouring, and wet or dry they are easier to remove than stainless steel covers. Available for 35mm and 120/220 reels.