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amcarrig · 10-13-2007, 08:52 AM

I don't use Purple Up and I have a ton of coralline algae. If you keep your Mg, Ca and Alk levels nice and steady, and if you do regular water changes, you shouldn't need the stuff at all. All it really contains is calcium (in the form of aragonite "dust"), iodine and magnesium. All of which are replenished when you change your water.

10-13-2007, 08:52 AM	#13 (permalink)
amcarrig 3reef Moderator Join Date: Aug 2004 Location: Wethersfield, CT Age: 38 Posts: 6,358 Karma: 4062	I don't use Purple Up and I have a ton of coralline algae. If you keep your Mg, Ca and Alk levels nice and steady, and if you do regular water changes, you shouldn't need the stuff at all. All it really contains is calcium (in the form of aragonite "dust"), iodine and magnesium. All of which are replenished when you change your water. _________ Member of the Connecticut Area Reef Society: http://www.ctars.org