KDog

Just use contact cleaner. With the power turned off. You will have to take the cover off the relay and spray inside it. Is it mounted on a PCB or does it have fly wires? To be honest it's probably just as easy to buy a new relay and replace it.

Did the tub have water in it, or was it completely dry? If you don't want to do a full Decon., you should still give it a good shock (20-30 ppm), and let it sit a few days before using it. Then, on your next refill do a Spa Flush. That will really clean the pipes out. After doing a shock, check your Chlorine Demand (CD) (see below). It should be around 25% (assuming you don't have an ozonator). If it's higher than 50%, I would seriously consider doing a Decon now. Just my opinion. Yeah the spa was empty and as it turned out unused for around 7 years. I did a full clean/fill cycle etc and everything appears good. Throwing a tablespoon of MPS in before use and a little lithiumhypochlorate after each use (and once a week) seems to keep everything where it should be. Thanks for the info and sorry for the late reply.

Cool, thanks for the info. The spa hadn't been used for around 4 years before I cleaned it out. All looked good after cleaning. I figured the N2 wouldn't be enough for a decent bathing load. Cheers

Hello all, Does anyone have any experience with using Nature2 sticks in spa's? I have just moved into a new (old) house which has an oldish spa installed. Everything works just fine so I cleaned it out and filled it up. On the advice of the local spa/pool guy I put an N2 stick in the filter cartridge and use MPS to "shock" the spa before getting in plus once a week. I am concerned that the N2 stick might not be the safest option on its own. There are 3 of us in the house plus visitors so the spa usually gets a daily workout. It's onlt been a week so currently everything is still healthy. Should I use lithium hypochlorite once a week (to keep up CH) and then still shock with the MPS? If so whats the point of using the N2 stick? Any advice appreciated.