Pool is 23-24000 gal and I am running pump 8 hours per day. Will the RC 35/22 be large enough or would I be better off with the going with the RC 42? The price points on the RC 35/22 are alot lower than the RC 42 SO I think it would be less expensive over x number of years but I am concerned it will produce enough chlorine. I live in Michigan and pool is open from about mid May to mid September.