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Old 04-29-2011, 06:32 PM   #11
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That number is fine. 450-500 is OK.
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Old 04-29-2011, 06:35 PM   #12
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That number is fine. 450-500 is OK.
Cool. Thanks!!!
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Old 04-29-2011, 07:26 PM   #13
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From my experience, anything above about 380ppm will grow it just fine. Below that, it may start to fade.
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Old 04-29-2011, 08:55 PM   #14
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From my experience, anything above about 380ppm will grow it just fine. Below that, it may start to fade.
Does anyone know the effect if it's too high?
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Old 04-29-2011, 11:46 PM   #15
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I also agree that PWC`s will provide all the supplementation you need. Some salt mixes might not have enough calcium and then need calcium supplements. What salt mix are you using?
Im using coralife salt mix and i also keep my calcium level at 500 ppm..but to no avail on coraline algae, had to fix the reflector on my odyssea pos... And i do see more light being reflected to the tank, the dang reflector is see through with a mirror finish... And its been 3 days and i do see and improvement...
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Old 04-30-2011, 12:09 AM   #16
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Willy what did you do to your reflectors?
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Old 04-30-2011, 01:17 AM   #17
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Willy what did you do to your reflectors?
i have the odyssea t5 24w x2 light fixture and i started gettin red algae did the check routine and all parameters were fine and took the fixture apart to clean out the reflector on it slides out and noticed black spots sse throigh, i hold it up in light and i could see through it keep in mind that is is shinny.. So i lined the black back part of the light with aluminun tray that i cut up then replaced the reflector over the aluminum so that light would bounce back to the aquarium...well i noticed that the rock were a bit brighter and corals responded and not as much red algae is forming... I have a day light abd a actinic...
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Old 04-30-2011, 02:48 AM   #18
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Does anyone know the effect if it's too high?
No bad effect, as far as I know. I don't think it grows any faster. If you're dosing calcium to get it high, and not keeping watch on your alkalinity you can really mess things up. But if it's naturally high because that's the way your salt mix is, it should be just fine.

Normally... you can't have high calcium and high alkalinity at the same time. It's one or the other. If you have high calcium, your alkalinity levels will be lower. And vice versa.
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Old 04-30-2011, 02:56 AM   #19
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Calcium in seawater is interesting in the fact there are multiple factors that control how much calcium can stay dissolved in solution. Too much calcium just falls out of solution and causes a brief period of white foggy water. This doesn't seem to harm anything as long as it doesn't settle on stuff and block light. So I think it is almost impossible to get it too high without a lot of effort.
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Old 04-30-2011, 04:07 AM   #20
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Calcium in seawater is interesting in the fact there are multiple factors that control how much calcium can stay dissolved in solution. Too much calcium just falls out of solution and causes a brief period of white foggy water. This doesn't seem to harm anything as long as it doesn't settle on stuff and block light. So I think it is almost impossible to get it too high without a lot of effort.
So if im using purple up for my 20 gal then how much should y dose, i dose very little because i was afraid harm would come to my tank.. What light does coraline algae prefer?
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