D-D U.V unit assembly instructions | D-D The Aquarium Solution
Question: 
I have just purchased the 20w UV unit and just equiring to actual instructions as the PDF instruction on ypur website is different from the item i purchased. Is this unit meant to have O`rings with it
Answer: 
Dear Kenneth
 
The instructions linked to below should be a similar variation of those included in the box, the second page however simply shows how to hard pipe the UV ’s with extra fittings for the install of ‘multiple’ units.
 
 
The U.V should come with the Viton gasket to seal the quartz tube against the body and top cap to prevent water escaping and two hose tail connectors with build it rubber washers to screw onto the body of the unit, no 0-rings as such.
 
I hope this helps Tony