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#1
12-13-2006, 06:01 AM
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I would boost the Ca, I do for all replacement water. The salt seldom contains as much Ca as the Company claims. Some Baking Soda will push the Alk up too, although it's not super low, Seawater is 8.2 I think.
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#2
12-13-2006, 02:03 PM
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Increasing salinity closer to 1.024-1.025 will somewhat increase the Mg and Ca of your salt mix. Probably will increase your alk, too.
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#3
12-13-2006, 02:20 PM
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I would adjust the mix to meet the levels of your main tank with suppliments. Starting with Mg.... then Ca and Alk. I find if you bring the Mg levels up first then the CA doesn't precipitate.
I am sure you know where your levels need to be but here are mine anyways: MG: 1360/1400 Ca: 435 Alk: 3.45 Meq/L Salinity: 1.024 Rich.......
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#4
12-13-2006, 02:38 PM
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Thanks guys. I was moreso worried about the oily film on the top of the water. I haven't seen this before and though something might have got into the water and contaminated it. I added some alk and Ca buffer and did the water change anyways. I expected some corals to slime up and the skimmer to go nuts if there was a problem but everything seemed fine. Still nothing detectable the next morning but I'll keep an eye on it and post if I notice anything. Thanks for your help.
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Jason
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#5
12-13-2006, 03:19 PM
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i seem to always have some film on top of the water when i mix up a batch,it seems a lot worse with some brands of salt,ive never worried about it much and i dont think its caused any trouble.
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but what the heck do i know
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