New growth causing lack of color?

[The Guy]

Originally Posted by jason604

Can't I just put rowaphos at the bottom then the foam pad then carbon n another foam pad so I can just change carbon only easier?

As long as the rowaphos can tumble at a slight boiling action, but the carbon should be packed tight between sponges so it does not tumble, I suppose it could be done that way, give it a try.