So big mac, how's things going?

Found something that works so much better than egg shells, I bought crushed Oyster shell for my Japanize Quail. I tested my AP pH last night & found it at 6.0 ppm, so I added a quart of the shells to a strainer bag to place in the FT. 24 hours later the pH was up to 6.8 ppm, hopefully it will buffer off around 7.0 to 7.2. Cheap and fast working...hope it's not raising it too fast, will check it in the morning and remove it. I will then add it back in after work, but will keep a close watch.