If you go the straight pump vs. canister filter route (which have pumps in them) you may wish to put a sponge filter before, to protect the chiller (and pump) from buildup/debris:
Sponge Filter --- Pump --- Chiller --- Tank
--- = hose
You'd probably also want to get a spray bar to diffuse the output going back into the tank.
If you get a submersible pump, depending on the sponge filter, you may be able to connect it directly to the top of the sponge filter, avoiding hose.
Otherwise:
The Eheim canister comes with an intake, hose (one piece which you need to cut into several), two quick release valves* (which allow you to take the canister out without emptying the hoses) and a spray bar.
With a canister filter, you put the chiller between the output of the canister and the tank.
Water Intake --- Quick Release --- Canister Filter --- Quick Release --- Chiller --- Spray Bar
(you'll also need a small piece of hose to assemble the spray bar)
In my experience, the Eheim doesn't come with quite enough hose to spare to connect to a chiller, so you'd need to buy enough to reach from the output of the chiller to the return/spray bar that comes with the canister. If you're not in a metric country, the Eheim is, so you might need to buy a stainless steel clamp to hold the extra non-metric hose to the output bar, and perhaps the chiller depending on its connector size. The 2215 hose size is 12mm inner diameter, which is close to 1/2", but unfortunately 1/2" is on the loose side.
You also might want to get an extra quick release* to allow you to remove the chiller from the picture as well... They are "non-symmetric", so set them up so that you can reconnect everything without the chiller if needed:
male/female --- chiller --- male/female -- return
If you go this route, you'd probably want to get extra Eheim metric hose, rather than trying to clamp on non-metric hose.
The segments of hose connecting the devices to the quick releases should be long enough to clear the devices themselves, as a small amount of water will leak out when disconnected.
The Eheim 2215 is rated 134 gallons per hour, but in reality, once connected to a chiller and filled with the included filter media, outputs 100 gallons per hour (I measured it, at water level), which, for your 130 liter future tank, would turn the water over 3x per hour - so the 2213 might be a little weak? Consensus for fish is to aim for 4x per hour; I went lower than that to avoid too much current; I have no idea what sort of flow you'd need to automatically pick up axolotl waste...! :wacko:
The chiller you choose would also have a min and max flow rate associated with it.
* A quick release consists of two ball valves which connect/couple together (one is male, the other is female). Each ball valve connects to a hose. Each ball valve shuts off or allows water flow, and the coupling allows you to disconnect the two. If you close both valves and then disconnect them from each other, only a small amount of water will come out.
Hose = Ball Valve with male connector = Ball valve with female connector = Hose
where = denotes a built-in threaded physical connector