Refugium Build And Anemone and Coral QUESTIONS PLEASE HELP NEW

So I Have Some Free Time This Weekend And I Want To Add A Refugium To My 55 Gallon Reef Tank 5 Months Old I have a 30 gallon Tall Tank Can I Use This For A fuge ? Does my fuge have to have the baffles can I just have no chambers with live rick algae and a CUP

Tank Currently Has

2 Clownfish

5 Hermits

1 Green Crab

Some Gsp

And Green People Eater Paly



ALL DOING WELL AND SPREADING

I am having some coraline algea issue it's growing like crazy GOOD SIGN OR BAD?



Tank Stats

Amo. 0 Nitrates 0 Pho. 0 Salinity 1025 Ph 8.4 Temp. 78 Bak Pak Protein Skimmer 2 Power Heads 100 Gal Filter (Media Changed Bi - weekly 2 True Beam Blue And White LED full spectrum Lights