[crystal]

Im just changing the resin in my small di vessel and am having a senior moment 
does the di container fit with the black rubber at the top of the vessel housing or the bottom
just to clarify this is part of a roman unit and the opposite end is white where the water comes out

[john tomkins]

There is an arrow on the side of the container, make sure it points upwards.
Black rubber at top 

[crystal]

Thanks John

I was beginning to wonder if anyone knew what i was trying to say
 :

crystal