Quick question about Red Sea roller mat

[Palluk33]

I have a quick question, guys.
I have red sea reefer 170.
And want to purchase a Red Sea Reefmat Nano or a Red Sea Roller Mat 250. I’m not sure what would be the best thing for me. Also, I don’t want to spend so much money. The nano model is plug-in play without any modification to the sump and is way cheaper. What do you think, guys? Do I need the bigger one or stick with the nano? Thank you

 

[Blitheran]

This is a reefer 170 with a Reefer 250 sump. I have a Clari sea 3000 and love it