Need help on cycle

[rubbersandal]

Hi guys is me again excuse me for this endless inquiry on my water perimeter.

pH = 7.5
KH = 4
Tap pH - 7.5

At this moment my tank is still fishless despite the cycle period is over. Consists only large bogwoods, Caribsea Torpedo Beach Sand and some rocks. As I'm preparing for altums intend to bring pH to 6-6.5,

Here's my questions.

1. Will pH lower itself upon the mature of my BBS (Since it had just completed its cycle)

2. By using Seachem Discus Buffer, does it only work hand in hand with Neutral Regulator.
Can I use Discus Buffer alone to reach pH 6.5

3. Put aside water change and topping up the water, according to my KH will my old pH start to
Bounce back at 7.5 again whether I'm using Discus Buffer alone or together with a Neutral
Regulator. As I need a permanent solution on pH hope you understand.

[Tech Support HK]

Since you will be adding fish, the amount of organic acids will be increased. This will pull your pH down somewhat, but it is difficult to tell how far the pH will be pulled down, and the length of time it will take for this to happen. Since your fish do prefer a pH of 6-6.5, I would try to set your tank water to this pH before adding the fish. You may simply need to dissolve some KH, since the KH of your tap water is presumably 4 degrees. You could use a little Acid Buffer in order to dissolve some KH to lower pH to the range you would like.

You can certainly use Discus Buffer by itself to lower the pH to 6.0-6.5. I would start off by using 1/4 the recommended amount, and see where the pH lies. Since you do have KH present in the tap water, you may need to add a small amount of Discus Buffer daily in order to stabilize your pH to your desired range. The phosphate based buffering system will take a little time to overcome the KH that is already present. But once the pH has stabilized, you should only need to add Discus Buffer during water changes.