Is it normal for pH to rise during the day? - The Planted Tank Forum
 
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post #1 of 5 (permalink) Old 04-18-2014, 06:45 AM Thread Starter
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Is it normal for pH to rise during the day?

Hi I have just recently out an electronic pH meter on my tank and have noticed that during the day and into the later evening the pH changes....a fair bit

All my numbers are great and pH in the morning is 6.6 ( where I want it) but by the evening it's looming around 7-7.2s then in the morning it's back down again is this normal?

Numbers
pH as above
Ammonia 0
Nitrites 0
Nitrates 0
KH 4 (API test solutions)
GH 5 (API test solutions)
Temp 26


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post #2 of 5 (permalink) Old 04-18-2014, 01:11 PM
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If your tank has an open top, that would be perfectly normal.

Angelo

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post #3 of 5 (permalink) Old 04-18-2014, 08:32 PM
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Do you use Co2 at all? C02 lowers the Ph value, and at night, your plants do not use Co2 since the lights are off...That would be my first guess. Shouldnt be a big deal.

125g semi planted. 2 silver angels, 14 silver tips, 16 white fin ornatus tetras, pair of Nicaraguense, pair of nototus severums, trio of firemouth cichlids. 2 FX5s, 1 1500gph circ pump, 2 48" LED lighs, and a HUGE piece of driftwood.

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post #4 of 5 (permalink) Old 04-19-2014, 06:16 AM
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small ph change is normal as plants use up co2, the small ph change should be fine for fish/shrimp


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post #5 of 5 (permalink) Old 04-19-2014, 06:36 AM Thread Starter
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I have glass covers then a wooden canopy

No co2 I don't actually use anything at all other than tristart and salts

Honestly the fish seem fine and I'm sure my clown loaches would show signs if it was affecting them I just got worried as I've not noticed it before.

Thanks loads


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