Okay, so I bought some crushed coral and put it in a bag inside the filter. I also added a very small amount of Flourish Equilibrium twice in these last two days. The other water parameters see checking out, so I'm going to contribute her condition to GH, or to the store/previous owner. I didn't really inspect her when I was buying, as I was really only looking at the male. GH is now reading at the low end of 50-100 (so i dosed again). I don't want to change anything to quickly. Eventually it will get there.
A few questions:
First, how do I prepare coral skeletons for the tank? My goal is to raise the GH with a combination of additives and coral, then maintain the proper level "naturally," using the smallest amount of additives possible. I bought two chunks of dead coral and need to clean it. I see that boiling is a rather bad option, as the heat can vaporize some pretty potent toxins that may be trapped inside the coral. Should I do a bleach (then dechlorinator) solution? Vinegar soak (though it will probably fizz like hell)? II doubt simply scrubbing an soaking would suffice. Every forum I look at with the "how do I clean dead coral for freshwater tanks" title starts with that question, then somebody says "Don't!" "You'll raise the pH too high!" or "Fish can cut themselves!"..... Then the thread carries on down the course of "Why not to use coral."
Second question: Roughly, how quickly I can change GH (by adding Equilibrium) without stressing the fish?
Third: Should there be any salt content in a Malawi cichlid tank? Opinions seem... well, like opinions. They vary, and there's no clear "correct" side. Does this mean that I CAN, but don't HAVE TO add salt? That's kind of what I'm thinking...
I'm sure I have more questions, but it's almost midnight and I'm dead tired. Thanks to anyone who replies (but it seems like it's just me and Colin on this one--THANKS COLIN!).
-'Tron