what should i add to my refugium

If you have the space plan on using it to frag. What size tank is it?

 

Then it's not gonna be undesirable, as John wouldn't send you bad types of algae. You might want to find out what exactly it is, though.

 

I didn't say bad, I said not all are desirable. I love grape caulerpa, but I'll never put that in a tank or fuge again after losing a tank to it going sexual once. For that reason, many people consider it undesirable (and many don't). However, if I (or any of us) knew back then what we know now, I would love to have been warned. That said, just looked at his site & don't see any type of caulerpa there.

 

good list . the mangroves like slooow moving water and the chaeto likes fast. the mangroves work good make sure you wash the leaves with fresh water regulary, they pullthe fresh water out of the salt and excret it thru the leaves. there easy to grow they like a mud base and a 65k light .