12V 1.5A Submersible DC Pump

I have the following 2 components and a arduino Mega.

Pump: https://www.amazon.com/DC-12V-Brushless-Centrifugal-Submersible/dp/B00C6XNB50 (the pump here is 1.1a though) Relay: https://www.amazon.com/JBtek-Channel-Module-Arduino-Raspberry/dp/B00KTEN3TM

I was looking to turn on and off the pump at various intervals. Here is my progress:

Connections:

Arduino - Relay: 5V - Vcc GND - GND pin7 - IN1

Relay - Pump: COM - Motor Adapter Live wire NO - Motor Live wire

Motor - Adapter: Motor -ve - Adapter -ve

I am not sure if I need a setup to prevent back emf and also, I am not sure how select and arrange those components (like while I may get solution for this here but where do I look up to calculate it other times)

I would appreciate any help in this matter. I have looked up but they are always for motors of similar but not same ratings, so I am a little worried to try.

My electronics skill is I know a bit of basics but I can follow instructions well. thanks.

Where is the 12 vdc 2 amp supply to power the pump?

Post a link to that "Motor Adapter". How much current can it supply?