how do you prevent the water lime in the aquarium?

Answer 1

It's true that calcium and other salts dissolved in the water cause hard water spots -- including "lime" deposits. And, as mentioned, getting a water softener can reduce the levels of these salts.

Two things, though -- first is if you get a water softener, try not to go with a softener designed for drinking water for the house -- these are typically ion-exchange mechanisms that exchange sodium ions for the magnesium or calcium ions. While that may reduce the lime deposits, it won't necessarily be very good for your fish. Go for a reverse osmosis system if possible, you'll thank yourself later.

The second is related to the last point -- make sure your fish want the softer water. Some fish, like Central American ones (platies, guppies, mollies, etc.) and goldfish prefer the harder water. By removing the dissolved solids, you reduce the ability of the water to absorb pH swings, which of course can be dangerous.

Hope it helps!

Answer 2

the lime is usually caused by hard water deposits so if you dont have a water softener then i would suggest getting one

Answer 3

yeah what she said