PH very low in new tank.

So this sunday I set up a new 125 gallon to house some of my larger S.American cichlids. I normally don't test the water my fist three days when setting up a new tank, unless it's a fish in cycle.
This time I went fish less. So today after testing the water I see that the PH is at 6.0, which is weird as all my other tanks are between 7.6 and 7.4. Every other level is quite good as you can see in the photos.
To help cycle the tank my LFS gave me some media from his sump system, I forgot to put it in filter but have it placed on bottom of the tank for now. I am wondering if I should use something to bring the ph up, as I will be adding some driftwood into the tank this coming Sat. Also puzzled as to why the ph is so low in the tank. FYI, I am not quite a beginner fish keeper, but still not an experienced one

Here are all my test results:

 

I'd just leave it for a week or two and test after wards.

 

I'd just leave it for a week or two and test after wards.

Thanks for the advice, just wondering as I know driftwood lowers the ph as well.

 

It can but not that fast.

 

My ph also fluctuated some while my tank was cycling. It always tests right around 7.5 now. As Amazonian said, I would give it some time and test again.
You really don’t want to try and battle with with your ph

 

My ph also fluctuated some while my tank was cycling. It always tests right around 7.5 now. As Amazonian said, I would give it some time and test again.
You really don’t want to try and battle with with your ph

Thanks, in my experience battling certain conditions in your aquarium can sometimes lead to a frustrating and downhill struggle.

 

F

Thanks, in my experience battling certain conditions in your aquarium can sometimes lead to a frustrating and downhill struggle.

For sure. Most tank bred species can handle a pretty wide variety of ph levels. As long as it’s constant at whatever it ends up being you’ll be fine

 

F

For sure. Most tank bred species can handle a pretty wide variety of ph levels. As long as it’s constant at whatever it ends up being you’ll be fine

I would like to have the ph be almost the same level as the tank they are moving from. Not going to panic, just take a wait and see approach. At least all my other levels are good.

 

I would like to have the ph be almost the same level as the tank they are moving from. Not going to panic, just take a wait and see approach. At least all my other levels are good.

Just did another water test, all the levels are the same as yesterday with the exception of the PH. The PH level went from 6 to 7.6 over night. I know the low end test will read 7.6 even if it is higher, so did a high range test and got 7.4 so I think my PH has settled into the range I wanted for my Severum's and Oscar's. I will still wait before adding the fish but all the parameters are now matching up to the other tank. I was thinking of maybe doing a fish in cycle with a pair of my convicts, still not sure if I want to do that through.