Weezywe12,
When it comes to bottom media I have run:
1 Crushed coral over under-gravel filters that was SOP in the 1970’s
2 Bare bottom (I.E. classic Berlin) with a high capacity protein skimmer
3 Variations of the Jaubert Plenums
4 The DSBs advocated by Dr. Ron & Rob Toonen
5 The EcoSystem “Mud Bed” systems. (These featured macro algae filtration in addition to the “mud” substrate. These systems were adjunct to the main tank, as part of the sump.
I also experimented with combinations of the above, such as #2 & #5 and #4 & #5.
Based on the above, my next reef tank is going to be a “#2 & #5” combination. To me this is the best combination as it allows you to get the high flow rates in the main tank that will keep your SPS coral happy also the benefits of algae filtration and the fauna “breeding ground” that an EcoSystem style filter can provide.
Running a high efficiency protein skimmer & algae filtration can be an interesting balancing act as the protein skimmer can “starve out” your algae filter. This is highly influenced by your feeding regime. I.E. the amount of import that your system receives.
A picture of one of my past EcoSystem based systems is shown in figure 5 of this article:
http://reefkeeping.com/issues/2003-01/gt/index.php I made the sump/filter from a 55 gallon tank, that was housed in the stand of the main (180 gallon) tank. In this particular system, I did not use a skimmer. The amount of macro algae shown in the in this picture was harvested roughly 2 weeks. The “mud” can just be seen under the macro algae growth.
Regards,
Scott