My understanding is that ek does not sell the pump top for the reservoir separately (I haven't been able to find the pump top separately). So you would need to buy the pump enabled reservoir, with the additional bottom to use separately. You could also get a separate pump and just run a tube, out connect with a fitting, but personally I prefer the pump mounted to the reservoir for space saving.
on the standalone bottom, either port can be in/out. On pump enabled reservoirs, typically one port is out, and all others are in. Some will have 2 out ports for options.
This is also a good value. The pump has less power than a standard dd, but will run about 2gpm without restriction, and has good head for a small low restriction loop.
I am currently trying to look for as inexpensive small d5 reservoir for a gpu loop I am considering... I have a spare d5 that I could use, just need a cheap reservoir to go with it.
Edited by EMUracing - 4/17/17 at 3:18am