Hello all! In my 30g I'm looking to upgrade my Aquaclear 20 to an Aquaclear 70. In doing so I am going to be modding the AC-70 into a HOB refugium.

I'm having trouble finding an answer in my research as to whether to use bioballs, live rock/rubble, or nothing at all (in addition to the chaeto). I've seen arguments for both. The most similar one being they each will become a problem when they begin to build detritus and are in need of rinsing (if at all).

So my question to you folks. What is your experience with this?