Hot Tub Water Filter
March 9, 2009 1:52 PM Subscribe
There is fine iron sediment in my well water. My hot tub has a water circulating system that cannot tolerate filter blockage.
posted by Raybun to home & garden (7 answers total)
A service man told me that even minor filter blockage damages the pump seals. I do not have a piping circuit diagram for the tub and cannot describe how the filters operate in the system nor how the alleged differential pressure safety valve is supposed to function. There is a secondary filter that gets restricted after a few hours of initial use with iron buildup. The service guy told me that, even without my suspended iron problem, this secondary filter should not be in my, or in any other Coleman spa systems. Neither the filter packages or the spa owners manual have any micron specs for the filters.
All of this is just background for my question.
I need to be able to filter 300 gallons of water as the tub is filling and/or build a circulating filter that would be used before the main pumps are turned on. Filling the tub takes roughly about half an hour with no filtration. This is too large a volume of water for a household Ro filter to handle.
I have an unused small swimming pool filter system that could be used to either filter the water as the tube fills and/or use as a circulating filter before the circulating pumps are turned on. What is the smallest particle in microns that a sand filter can remove from water? I can also easily modify this system, if used as a circulating filter after filling, into a removable media filer.
I could also build a filter with stacked Scotchbrite pads. My parts washer uses a Scotchbrite polishing pad to filter sediment from the cleaning fluid.
Is it possible to use a hose mounted filter, such as the Gardenmate, that can be backflushed?
Any Form-Follows-Scrounge ideas?