100% ??
Don't plumb them in line with the return
I plumbed mine into my return and put valves on so I can regulate the flow when it gets slightly clogged open te valve a little bit more
Just behind dosing pumps this was my best upgrade decision
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250G DD LED SPS R.I.P.
180G LED SPS
80"x36". 300G custom build
Owner of Mountain Ridge Heating and Gas
Class A gas fitter, HVAC
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