sellin my ghl 2.1 4 pump master doser in black bought it a couple of months ago for a set up i was doin but decided i didnt really need it tried to sell it but was gettin lowballed so decided to keep it rather than give it away my new set is finally up and running so decide to connect the the doser but its just way to complicated for me as far as programming i rather manuall dose instead i plugged in the unit to make sure everything is pump running will be more than happy to let you test it out b4 u buy my loss ur gain asking still have the box and everything it came with pm or text for pics 6464063931 thnks will throw in a set of the triton core 7 base elements free with purchase not lookin for trades
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