Yes they lack direction on how much of what media to pit in.
I bought the pre filter, Bio max, Polishing Pads, Carbon.
I'll have to look to see what is recommended. I know you can add different types into one basket.
all for sharing our hobby with me. I have learned so much, I don't know everything, and I'm not a expert. But if I can share what I have learned I'll be glad to share.