11-28-2007, 06:42 AM
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Carbon does have a tendency to leech phosphate into the aquarium after it goes bad. While it's working at its best, it will remove trace elements from the water that some
corals need - compromising their long-term health.
It works well for me because the corals I'll be keeping are straight softies and won't suffer from the loss of nutrients.The potential phosphate leak also isn't a huge problem because I have a refugium that will aid in removing small amounts from my system.
It's up to you to decide whether the pros outweigh the cons, but the situation isn't necessarily black and white. You could, like me, use it on a temporary basis to keep the water clean etc, but then remove it when there's no need for it. I'm using it now because I'm still cycling and I'm dealing with periodic algae blooms.