PH swings

[RyanScanner]

I have a planted tank with a C02 reactor and controlled that is timed only for 1 hour before lights are on and stops at before lights out. The bubbler then turns on and degasses the C02. The PH sits at around 7.5-7.7 in the morning and the controller slowly reduces it to 7.0-7.1 during the day.

I was wondering if this daily PH swing is bad for the plant or fish. It’s a 300 gallon tank.

 

[SilverArowanaBoi]

I have a planted tank with a C02 reactor and controlled that is timed only for 1 hour before lights are on and stops at before lights out. The bubbler then turns on and degasses the C02. The PH sits at around 7.5-7.7 in the morning and the controller slowly reduces it to 7.0-7.1 during the day.

I was wondering if this daily PH swing is bad for the plant or fish. It’s a 300 gallon tank.

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View attachment 1547164

First, I have to say that it is a beautiful tank! I love the driftwood in there; it has such detail, and everything else looks great!

Regarding your question, I would leave it alone if your plants and stock aren't suffering (I can't tell if you have any stock there).

 

[duanes]

In nature pH vatiations between day and night are normal.
Duing the day in heavily vegetated areas , as plants use up CO2, pH rises.
At night when plants switch use to oxygen pH drops.

 

[RyanScanner]

C

First, I have to say that it is a beautiful tank! I love the driftwood in there; it has such detail, and everything else looks great!

Regarding your question, I would leave it alone if your plants and stock aren't suffering (I can't tell if you have any stock there).

Thanks, that’s what I like about it is there is plenty in there but they all have somewhere to hide. Everything is small and will grow with the tank. 2 fire eels, 1 tiger moray, 4 Orange head geophagus, 4 yellow eel tails and about 10 clown loaches.
Fire eels are tiny like 100mm and the tiger moray is 200mm.

 

[RyanScanner]

In nature pH vatiations between day and night are normal.
Duing the day in heavily vegetated areas , as plants use up CO2, pH rises.
At night when plants switch use to oxygen pH drops.

Thanks duanes I didn’t know that there was adaptions in nature. I always read about avoiding fluctuations especially for plants. The rocks in the tank are local creek boulders and increase the GH & KH but that’s a good thing for my half desalinated water that is very soft.