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Old 09-11-2013, 11:00 PM   #21
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I also have switched salts pretty frequently, depending on whats on sale. I also do 50% water changes on most of my tanks and have never had any issues involving parameters shifting drastically or any ill effects on any livestock.

When I change salts I just go about my water change as usual, no need to get all the "non reef" salt outta the system before adding corals. After a few weeks it will be converted over and wont; matter in the least.

Good luck.
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Old 09-11-2013, 11:35 PM   #22
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The OP has a non reef salt with FOWLR. If one has to put corals on it without the right parameter it would be a gamble. May be if you start with the hardy ones it's okay. However, with a 20 gal tank I would just replace 50% on the 1st pwc. It would give me peace of mind knowing I have the right parameter at the star or shorten the time to be at the right level.
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Old 09-11-2013, 11:50 PM   #23
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IMO instant ocean regular is good for corals already your levels should be fine anyways. Yes reef crystals will increase coral trace elements but nothing crazy. I made this switch to reef crystals after about 18 months of using IO and just did so by simply just using it in pwc instead of IO. If your having issues with calc/mag/kh/ etc it is not going to change based on salt there probably a underlying issue but if your just wanting corals and want to switch salts if it was me I would not do anything different then you are now besides using the different salts but again that imo
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Old 09-12-2013, 08:48 AM   #24
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OK, so the moral of the story is to check all the parameters, make sure they are sustained, and just do the switch during PWCs.
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Old 09-12-2013, 05:05 PM   #25
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Quote:
Originally Posted by dmolavi View Post
OK, so the moral of the story is to check all the parameters, make sure they are sustained, and just do the switch during PWCs.
That sounds right to me.
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Old 09-12-2013, 05:13 PM   #26
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The manufacturer recommends IO for fish, inverts and plants. Corals may live but you will not expect good growth due to insufficient trace elements.
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Old 09-12-2013, 05:26 PM   #27
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Quote:
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The manufacturer recommends IO for fish, inverts and plants. Corals may live but you will not expect good growth due to insufficient trace elements.
This isnt necessarily true. Theres people that have successful reefs with regular IO salt. Reef crystals just have higher trace elements. Which means that you could technically support more corals.
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Old 09-12-2013, 05:40 PM   #28
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One website reports a higher level of calcium in the reef crystals as well, but doesn give comparitive numbers. But if true, thats important.
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Old 09-12-2013, 05:48 PM   #29
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Important, yes. Only if the difference between the two is great enough. May buy some small boxes of each and do some testing once my test kits get here
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Old 09-12-2013, 05:51 PM   #30
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I've only used regular instant ocean and my corals seem happy. I do dose Alk, cal and mg though cause my tank is really heavily stocked with coral and they grow like crazy. There is only one store that sells reef crystals in my area and they sell out in like 2 days so finding it is tough for me. I'd give it a try but for now regular is workign fine...
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