coral in FW

[Shagmaster]

Will coral change the PH in my tank?

 

[desertgoldhound]

Yes it will infact some use coral to buffer there PH. This can be a good thing or a bad thing depending on your needs.

 

[Ulan]

In Los Angeles, maybe, not. If your pH is already 7.8 or higher, you might not see much change.

 

[echoofformless]

If you mean to use coral in the tank itself, as a decoration...this is not a good idea. Beyond the pH/hardness issue, coral will likely present danger to freshwater fish who are not used to it and can be injured.

Even scoria lava rock can be a little dangerous to your fish. I notice tiny little scrapes on them quite often in the tanks where I have it. Nothing dangerous, but still....it has caused me to remove a good amount of it.