Refugium with chaeto or bio-pellet reactor

[Craigdillman]

This all depends on what your goals are and what it plans for the tank are

Are you keeping some mandrins or fish needing pod population? Get the fuge
Are you more worried about nutrient export or nitrates and phosphates get the pellets
Using the fuge as sole nutrient export won't work either unless your cheato is he size of your DT it helps but can't be the sole nutrient export

So it all depends on what your doing with the tank
Both will work givin the circumstances

My 2 cents