During PetCo's sale I bought a 20 gallon long to use for a sump under my 55 gallon DAS tank which I gutted the built-in filter. Here is a drawing and my comments below:



Here are my questions:

1.) Should I use acrylic or glass baffles? If I use acrylic, what width (3/4"?), and would rough sanding the sides help silicon adhere to it?

2.) Are the height of my baffles between the skimmer/drain section and the return area okay?

3.) I will feed the refugium from a T off of the return line. With 1" teeth on the refugium baffle, is that enough for reasonable draining from refugium back to return area given the height of the other baffles?

4.) Does it appear that the sizes of the three areas are sufficient? I will probably use an Aqua C Remora or Urchin for a skimmer.

Thanks for your help.

Lee