https://www.amazon.com/XSPC-D5-Tank-Reservoir-V3/dp/B01BA4VU1M/ref=sr_1_8?ie=UTF8&qid=1483378190&sr=8-8&keywords=pump+reservoir+combo#HLCXComparisonWidget_feature_div
if i was going to not do a pump res combo with this res do i only need a pump or do i need to get a pump top?