Thanks for you help with this issue.

Here is a bit more info.... My system uses a single 1 hp pump for all circulation with Jande valves to control flow from the suction, to the return and to the solar. I know I could use an additional pump for solar, but the solar works so good right now, I hate to change that part. My concern is maintaining the proper chlorine level in the spa.

On the return side, the return valve directs water either to the pool or the spa, with a bypass line (which I manually control) to allow some of the pool water into the spa. The Pool Pilot is plumbed into the pool return side only. Therefore, chlorine is injected into the pool only. The spa is never chlorinated directly, it is chlorinated by water that eventually circulates from the pool through the bypass line to the spa. In this way, if I run the circulation pump long enough in pool mode, the spa will reach the chlorine level of the pool, but never any greater. If I do not run the pump long enough, the spa will not reach the chlorine level of the pool. At present, the highest level of chlorine I ever see in the pool and (at best) the spa is about 3 ppm's.

I have read that the spa should have a higher concentration --- as much as 6 ppm's. This is the first year for this pool/spa and the kids (and grandkids) find it a fun place to hang out, therefore it's getting alot of use. In a typical week, it's used 4 days for about 6 hours and the kid load is big.

I could have the plumbing changed and move the pool pilot behind the return valve, which would allow chlorine to be injected into the water whether in pool, spa or overflow mode. If I do that, chlorine will be injected into the spa and I could control the amount by the length of time I run the pump, but it also means that while bathers are in the spa, chlorine will be injected. Since the Jande RS-8 controls the pool pilot, it would be nice if the Jande could set the percent of chlorine to two different rates --- one for the pool and one for the spa. Is that possible?

How are others using their chlorine generator with a pool/spa combo? And how do they control the amount of chlorine in the spa versus the pool?

Thanks for any comments....