after some searching around local shops i found an acrylic container i could make a good res from.
the screw top is from a small bottle i had and the side barb is a y connected cut in half. Both are glued with pvc pipe weld so it should be ok with the constant water contact.
my only problem is how to connect it to the ehiem 1048 pump.
options so far.
1 glue it (might want to upgrade the pump so i am not to sure about this option)
2. silicon sealant with something holding them together like a big tie rap.
does anyone have any ideas ?