Want to help but it seems we need more info? You have an 'in-line' chlorinator that you put tablets/pucks in? Or something else? You specifiy your filter but what is the model of your chlorinator? This link may help http://www.poolplaza.com/pool-school..._feeders.shtml The two in-line chlorinators I helped neighbors with were both after the hose comes out of the filter and before it goes into the pool. Of course we don't have heaters here in TX; maybe chillers? Hope this helps some.