DaHose

Hello, everyone. I have benefitted greatly from this site, when building my spa in the back yard. It's an older 8' octagonal spa with a LaarsLite2 heater (TOTAL overkill). I inherited the tub from my father-in-law and it has become a GREAT addition to my back yar. As part of the project, I ended up with a spare filter unit I will not be using. It is a stainless steel Pentair Nautilus DE filter. Looks to be an older unit, but I am not sure of exact model, as the model tag is all torn up. The unit was operational when the spa was removed from its original location. I opened up the filter and all the filter bags and internal manifolds are in perfect shape. It has the plumbing and backwash valves attached, as well as a second small tank that I think was part of the backwash circuit. I live in California and am trying to guess at a fair used value for the filter. I know that new they still sell for over $1000, but is there a used market for this kind of filter? Thank in advance for any helpful suggestions and info. Jose

Hello, all. New to this forum and in need of guidance. I have inherited a tub from my father-in-law and want to hook it up in my backyard. The concrete patio is about 3 inches thick where I will put it. It's an 8 ft. octagonal tub with dual 220V motors, natural gas heater and DE filter system. I don't need the commercial duty gear, so I am going to get creative to save space and make things easier to maintain. I plan to convert to paper pool filters and need to figure out how to best wire up the motors/pumps for my needs. Would it be sufficient to use one, 110V electric pump (1" line) that flows 750 GPH for my sanitation pump? I would use a T fitting at the skimmer output to feed it, so it would always have water and not have priming issues. It would connect back in to the main intake a couple feet further down with an anti-reversion valve on the main, so it doesn't back flow into the tub. Would that be enough to keep the water stable and clean, running for say 1/2 hour every 2 hours? How many times an hour/day should the sanitation pump be exchanging the tub water? For power, I would like to use my dryer circuit from the garage. The circulation pump motor is 220V and 9.2 amp (18 A counting for both legs). Heat will come from a natural gas heater. I have all the electrical from the tear out of the tub as well, including air pressure relay for jets, GFCI and timers. I intend to buy some 10-4, run dedicated ground for the dryer circuit and connect the 220V GFCI for the circulation pump. I was told by a co-worker with pretty good electrical knowledge that I could break out one leg of the 220V power, to create a 110V plug for my little sanitation pump. Would the GFCI protect the 110V circuit as well? Thanks in advance for all helpful suggestions. Jose