I am on my THIRD Hayward CL220 offline chlorinator in 5 years , the lids just stop working after a year or so , and it's not worth buying just a new lid.The O ring gets coroded m the threads get full of dirt.is anyone familiar with the Pentair/Rainbow 300 offline , will it be able to get installed in the same holes made in my pvc pipe as the CL220 ?? Are the Rainbow's any better or more durable than the Hayward's ??
THANKS