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Old 03-13-2004, 12:34 PM   #1
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SG question

I've been keeping my sg between 1.024 and 1.025 since i started my sw tank from all I have read here that was the "ideal" sg. My lfs said I should not have it that high since I don't have corals. He said I should keep it at 1.021. I need help, which is better for my fish? All 3 of my tanks will have lr and ls eventually so I guess all three need the same settings. Opinions anyone?
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Old 03-13-2004, 12:39 PM   #2
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well a sg of 1.021 would be fine for fish it is better for them and they are less likely to catch some thing. if you have corals and such they need 1.025. and if you do lower it remember to do it no more then .001 a day.
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Old 03-13-2004, 12:46 PM   #3
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No corals just lr. So I can lower it with no adverse reactions? On my lr is some sponge. Will it hurt that?
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Old 03-13-2004, 12:48 PM   #4
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I think 1.021 is too low regardless of what your stocking. Natural seawater is around 1.027, if your not comfortable with 1.025 I wouldn't go any lower than 1.023 or so. Personally I would keep it where its at. Thats JMO. Best of luck.
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Old 03-13-2004, 01:14 PM   #5
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Your LFS is probabley advising the lower SG as many still believe it will help reduce instances of parasite problems which is completely false. The lowered salinity is actually not necessary and will not keep your fish healthier. In fact over time it will shorten their lifespan somewhat. Keeping it at a natural environment would be better for the fish.

Any critters or hitchikers on the LR will eventually be affected as well. I would also suspect the coralline will not be as prolific or possibley bleach.

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Old 03-13-2004, 01:31 PM   #6
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OK so it's 2 to 1 for higher sg. Since I value my little friends I will leave it at 1.024 to 1.025. (Guess I need to start making time to go see Bernie more)
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Old 03-13-2004, 03:24 PM   #7
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if your not comfortable with 1.025 I wouldn't go any lower than 1.023 or so.
It's not my comfort I'm worried about.
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Old 03-13-2004, 04:03 PM   #8
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well if there is now good things about haveing your sg lower keep it at 1.025. i always thought it would prevent your fish from getting sick more often. but i guess i was wrong. sry
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Old 03-13-2004, 04:42 PM   #9
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I appreciate your input, I'm by no means an expert. Just trying to make my fish as confortable as possible.
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Old 03-13-2004, 10:34 PM   #10
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As steve-s pointed out an artificially low SG will shorten the lifespan of your fish. Their kidneys cannot keep up with the constant lower salinity than they are evolved too.
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