sunjai
 
文章: 24
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 于 2005-03-09 08:06    
Refugium - This lighted area can grow macro algae, which takes up nitrates from your water. The plants also add oxygen, and help maintain pH levels when the display's lights are off. This predator-free zone will allow good growth of copepods, ampipods and other microfauna that eventually end up in the display tank as food for your inhabitants.
Q.How much flow should I have in the refugium?
A.The flow rate through a refugium is slower than through the sump. By use of a ball valve on the water feed to the refugium, you can set the flow rate to your specific desire. You need to avoid stagnant water, and the surface of the water should be broken slightly to avoid a film growing on the surface. Try to achieve a gentle flow throughout this zone.
Q.How deep should the water be in my sump?
A.Depth is determined by the type of protein skimmer you use, and how much room you have under your display tank. Every skimmer is rated for a specific depth of water it can run in. If your skimmer needs to run in 5" of water, you can adjust this with a small stand to hold the skimmer higher up in your sump. Keep in mind that as you raise the skimmer up, it will get closer to the top of your cabinet supporting your display tank. You still need to have easy access for simple maintenance. Having more water in the skimmer section is ideal, because it allows more time for microbubbles to dissipate, and it allows you to have more water in your return section where evaporation occurs on an hourly basis. If you can run your skimmer in 9-10" of water by setting it on a stand, you'll get great results in my experience.
The water level in the section where your skimmer is located must remain constant. If not, the skimmer won't be able to operate effectively. This is why the skimmer is in the first zone of your sump, as that water level never changes, except when your return pump is switched off and excess water accumulates
岩礁園丁 修改于 2005-03-09 12:17
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