where should my calcium level be for my coralline?

[NJtuna]

hey i just used a seatest calcium test to find that my calcium is at 330 milligrams per liter. so where should it be for good coralline growth? am i safe to use purpleup at this level?

also one more question, i just took a live rock that had green hair algae on it and scrubed it with a toothbrush to get it all off, can i safely but it in another tank for the corraline to grow back without the green hair growing back and spreading into the other tank even if the water has no phosphates?

 

[melosu58]

1) Your calcium need to be around 420-450 for good calcium in your tank.
2) The green hair algea will grow back if you have a fuel source in there. Nitrates also will fan the flames. Excess nutrients from overfeeding will do it also.

 

[seaham358]

You also need to check your alkalinity levels and post the numbers for them. Cal and alk should be balanced together.