The inner layer of the tank is covered with a coating designed to control levels of bacteria and fungi and keep the water potable. When assembled, the panels measure 2 sq m (21 sq ft) and form an octagon with a slope of 3 degrees that allows water to funnel into a central filter and continue on through a hose into the tank. The PhotoFlow design is composed of eight identical triangular photovoltaic panels that are mounted on a 400 liter recycled polyethylene water tank. Many developing nations are located on or near the equator and receive more sunlight and rainfall than just about anywhere else on Earth, so why not make the most of this situation by combining solar power with water storage? That's the logic behind PhotoFlow. Consulting and design company NOS is looking to address this problem with PhotoFlow, a two-in-one concept design that combines solar power generation with water collection and storage. It is not really necessary for film unless you are using a hardening fixer. HCA is used to speed up washing fixer residue from film and fiber based prints allowing for water conservation.
PHOTOFLOW VS HYPO CLEAR MANUAL
It can be used in all manual and machine processes to greatly reduce. Films and RC papers can be over-washed a bit with no ill. The times are generally three or four times longer.
If you dont use a hypo-clear for film and RC paper (staining developers/alkaline fixer), then make sure you wash adequately. In many countries around the world the supply of electricity and clean water is often sporadic and of poor quality. HCA and 'photo-flo' are not the same, photo-flo is a surfactant that allows water to sheet off film for spot free drying. ILFORD ILFOTOL is a non-ionic wetting agent used as a final rinse before drying films. Bottom line, use a hypo-clearing agent and wash well unless there is a good reason not to use the hypo-clear.
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