Is it real coral or made of resin? In a freshwater tank, real coral can dissolve a bit and mess with the water chemistry (pH, alkalinity, etc.) since it's made of calcium carbonate. Most tropical fish seem to like slightly acidic water, and dissolved calcium carbonate can make it too basic.
I've had the coral in the tank for more than 2 months. The ph has been consistantly at 6.8. But the alkalinity has been consistently at 40 where normal on this dip stick is 120 -180. Should I remove it??
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