Right now I have a 60 gal display and a. 20 gallon refugium with caulerpa dragons breath and cheato. And 20 pounds of sand. And a 20 gallon sump. I’m upgrading to a drilled 75 gal with a custom made 40 gallon sump with an extra large fuge chamber. I’m worried about the decrease in water volume. I have a couple of questions like can I put all three kinds of algae in such a small space together should I add sand and will they pull as many nutrients as they did on the 20 gallon? Anybody have any experience with this?