I have an e-commerce site and in order to receive a listing for each size and color in Google Merchant, I've created a new product for each size and color. The problem is that since I did this, the canonical tags aren't correct and there isn't a way to change them manually with the platform I'm on. I feel like this is one of the main reasons I've been dropping in the rankings. Should I delete all duplicate products? The system will take care of canonical tags automatically when creating a new size/color within the system (how it's supposed to be created) but the canonical tags become messy when I duplicate a product and edit the size/color to create a "whole new product".
Here is an example of what I'm referring to:
http://www.carbonconnection.com/search.php?search_query=nalini+rigel&x=0&y=0
(this problem actually isn't mine, it's a friend's but for the sake of simplicity and gaining a second opinion to be sure before he redoes all of his products, I'm asking as though it were my issue)
