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Discussion Starter · #1 ·
when I got a new Gh kit and tested my tank it was Gh 0. I slowly raised it to Gh 4. I left the tank alone for a week and retested and it's back to Gh 0. What can cause the Gh to drop like that in a week?
 

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Hey matt, lets mix our water. lol. I got gH creep, you got gH drop. Together, it should be perfect. What substrate are you using and is this a new tank? Akadama can suck water clean for a little while.
 

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matt our of curiosity was your purigen packet getting old? do you ever re-charge it?

I have a 5 month old purigen pack I never recharged and am afraid it might do the same thing as yours
 

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Discussion Starter · #13 ·
No it wasn't old. I have a 2l container I filled a media bag from in July. The purigen was only slightly brown on one side.
 
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