Haha, well I'm pretty new as well. But for the most part a sump is used to increase the total water volume in your system, many people use this hidden sump area to put their heater, skimmers, and the like out of site so the Display has a cleaner look to it.
Generally in the sump you place the skimmer and a return pump to pump the water back into the DT(Display Tank) The drilling of the tank is so that you can install an overflow and other related plumbing back into the tank.
Many people also use the sump as a combo refugium and place Macro algae such as chaetomorpha(Chaeto) to remove nitrates, more LR and LS to improve the natural filtering ability of your system.
In a saltwater tank your main filtration happens via the Skimmer and your LR and LS. The HOB or Canister filters are less effective for what we want as they simply trap nitrates and if the filters are not changed weekly can lead to massive nitrate spikes and nuiscance algae blooms.
If cost is a thought check out aquatraders.com they have a nifty HOB Fuge/Skimmer combo or seperate skimmers and very low cost lighting solutions. I am currently waiting on a replacement ballast for my 150w MH pendant from there. In the past they got some bad reviews for cheap products, but since have upgraded components and reviews are mostly good. I plan on getting the HOB fuge/skimmer on the 20th and will do a product review in the appropriate section once I do.
The fuge is also useful for growing pods(amphipods and copepods) as a food source for fish/coral and the like.
I hope that answered some questions. I'm sure everyone here can correct me where wrong and add to this.
Generally in the sump you place the skimmer and a return pump to pump the water back into the DT(Display Tank) The drilling of the tank is so that you can install an overflow and other related plumbing back into the tank.
Many people also use the sump as a combo refugium and place Macro algae such as chaetomorpha(Chaeto) to remove nitrates, more LR and LS to improve the natural filtering ability of your system.
In a saltwater tank your main filtration happens via the Skimmer and your LR and LS. The HOB or Canister filters are less effective for what we want as they simply trap nitrates and if the filters are not changed weekly can lead to massive nitrate spikes and nuiscance algae blooms.
If cost is a thought check out aquatraders.com they have a nifty HOB Fuge/Skimmer combo or seperate skimmers and very low cost lighting solutions. I am currently waiting on a replacement ballast for my 150w MH pendant from there. In the past they got some bad reviews for cheap products, but since have upgraded components and reviews are mostly good. I plan on getting the HOB fuge/skimmer on the 20th and will do a product review in the appropriate section once I do.
The fuge is also useful for growing pods(amphipods and copepods) as a food source for fish/coral and the like.
I hope that answered some questions. I'm sure everyone here can correct me where wrong and add to this.