KH drop after water change

S

sublime-1

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I did a 10% water change on saturday because I had the unfortunate experience of my skimmer pump failing and me not realizing it for 3 days.

(don't ask.)

Anyway, I had a green algae outbreak that coated the front glass, and I spent the better part of sunday scrubbing the algae off with a scraper.

Anyway, I went ahead and did a 10% water change to remove some of the debris from my scraping, and to lower the nitrate impact of all the dying algae in the tank.

I check my params today and I noticed my KH is down to 8 from a usual 11 - 12. PH has remained the same at about 8.1

I don't currently supplement anything.

Will the Carbonate Hardness come back up on it's own or is this a biproduct of the water change and do I need to supplement to bring it back up ?

Thanks
 
As it's been more than 24 hours, you shouldn't expect the level to come back up on it's own. Chances are, your salt mix has lower dKH than you are running. If you want to get back to 11, supplementation is in order.
 
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