I recently got the indo-pacific sea farms refugium starter kit which came with 4 macros. My tank is a 40B with a 29G sump and im not running a skimmer.
- Grape Caulerpa (will attach to substrate)
- Chaetomorpha (Chaeto) (will form a fast-growing, floating mass)
- Tang Heaven Red (Gracilaria) (will form a floating mat)
- Tang Heaven Green (Ulva) (will form a floating mat)