Alright, give me the low down on these.

Iíve watched videos and read several articles and decided to buy some. I have one leaf in my 38 gallon currently.

Here is my only worry with them....

The ph of my water typically runs high in the 8.2-8.4 range. Letís say I add these leafs and it reduced my PH to 7.8...whatever...then I do a 50% water change and the water Iím putting in has the PH of 8.2...Iím going to end up with a ph swing of .2 in that case at each water change correct? Thoughts?