SWG is 6 yrs old. took water sample to pool company and they said their test showed high salt....the 2300 reading was on opening the pool. added 1 1/2 bags salt after opening and checked 2 days later and got 2400...did acid cleaning to cell today, reset and now reading 2500, added 1/2 bag salt to see if reading will be higher tomorrow. When I took sample to store and their reading was high, I think the salt had not filtered long enough. If reading keeps going up I would think cell is ok.Test strips are now showing a lower but ok reading..panel shows salt is generating, low salt flashing.