Reef Central Online Community - View Single Post - Can a large group of people cause a pH drop?

Aquavaj · 08/10/2018, 08:42 AM

My tank rarely drops below 8.0 and usually swings between 8.2-8.4 but last night I had almost my entire family (15+) over and saw a sharp drop in my pH down to 7.85. I noticed a few corals wouldn't open up fully. The only thing I did last night was feed, dose daily .2ml vodka and changed out the sponge and filter pad. Nothing I can see that would affect the pH that much.

Is it correct to assume that the available o2 decreased because of the increase in intake and thus also an increase in co2? It was hot so had all windows closed with the AC too.

08/10/2018, 08:42 AM	#1
Aquavaj Registered Member Join Date: Jun 2014 Posts: 132	Can a large group of people cause a pH drop? My tank rarely drops below 8.0 and usually swings between 8.2-8.4 but last night I had almost my entire family (15+) over and saw a sharp drop in my pH down to 7.85. I noticed a few corals wouldn't open up fully. The only thing I did last night was feed, dose daily .2ml vodka and changed out the sponge and filter pad. Nothing I can see that would affect the pH that much. Is it correct to assume that the available o2 decreased because of the increase in intake and thus also an increase in co2? It was hot so had all windows closed with the AC too.