I tend to think that if I keep my calcium and alk levels on the higher
side, and my Sg up around the 1.024 to 025 range, coraline usually
starts and grows just fine when its ready with or without any
supplemental additives such as purple up. I have had coraline start
with in 30 days of setting up a new tank, and I have others where it
took 2 or 3 or more months for the first sign of it to
appear......Save your money, don;t buy those additives, spend it on a
decent calcium supplement like B-Ionic etc and when your system is
mature enough it will get coraline all w ithout any purple up.


On Sat, 1 Apr 2006 01:39:47 +0100, "Alan Gabriel"
wrote:

"TheRock" wrote in message news:8ZhXf.340$te1.67@trndny03...
Yes purple up works for all coralline...It's a calcium supplement
Coralline algae needs calcium

1) Ionic Calcium: Immediately raises dissolved calcium levels in the
aquarium water.

2) 10 Micron Aragonite: Targets the live rock surface, where it dissolves
in situ, delivering calcium, strontium, magnesium and carbonate right
where it is needed.

Iodine Replenishment: Purple Up also replenishes iodine, an essential
element for coralline algae tissues that becomes quickly depleted in
closed systems.

Does it work ? Is it worth buying ?
Remains to be seen...I think I bough my last bottle.
8 months and I'm finally getting lots of coralline, but I don't think it's
because of that additive.




I'd suggest getting a Test Kit for Iodide. My sponges react badly if
slightly overdosed.

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