Running filters with carbon at the start is often a good idea. There are all sorts of things which might be floating around in the water in a new aquarium that you would do well remove.
However, the granular carbons, as you observed, can cloud the water at first. It is just a lengthy washing process. I would suggest that you wash less of it at a time so that at least you see the water clear more quickly.
There is nothing more disheartening than washing an enormous quantity of carbon or indeed sand, and not seeing any results for the longest time.
There is an option to granular carbon and that is to use carbon filter pads. They’re like black sponges and will not colour your water; though give them a little rinse of course. I used Eheim’s own carbon pads in my Eheim filters when I first started 'em up.
However, the granular carbons, as you observed, can cloud the water at first. It is just a lengthy washing process. I would suggest that you wash less of it at a time so that at least you see the water clear more quickly.
There is nothing more disheartening than washing an enormous quantity of carbon or indeed sand, and not seeing any results for the longest time.
There is an option to granular carbon and that is to use carbon filter pads. They’re like black sponges and will not colour your water; though give them a little rinse of course. I used Eheim’s own carbon pads in my Eheim filters when I first started 'em up.