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post #1 of 2 (permalink) Old 06-07-2005, 03:44 AM Thread Starter
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MgSO4 questions

First off, when you see MgSO4+7H20 - is this just the long version of Epsom Salt (straight MgSO4)?

Also, I already have 7dGH tap water, but want to start adding a little but of Mg anyway to the water just as an additional booster in case the 7d's is made up of mainly Ca without me knowing it. What is a good amount to add after each water change to 40g's of water? In terms of Teaspoon fraction sizes would be most beneficial. I was thinking 1/2t after each water change.

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post #2 of 2 (permalink) Old 06-07-2005, 12:00 PM
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Quote:
Originally Posted by Spar
First off, when you see MgSO4+7H20 - is this just the long version of Epsom Salt (straight MgSO4)?.
Yes
Quote:
Originally Posted by Spar
Also, I already have 7dGH tap water, but want to start adding a little but of Mg anyway to the water just as an additional booster in case the 7d's is made up of mainly Ca without me knowing it. What is a good amount to add after each water change to 40g's of water? In terms of Teaspoon fraction sizes would be most beneficial. I was thinking 1/2t after each water change.
That should be adequate to assure you won't get an Mg deficiency
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