"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.

--
Regards,
Alan

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