pH, GH, KH increasing?
My tank is still cycling so I don't have any fish in there just plants.
When i first started my tank (4/2/16) my pH was about 7.2-7.4, GH took 11 drops, and KH took 6 drops according to API's tests.
Fast forward to this weekend.
GH took 12 drops, KH 6 drops, pH is 7.4-7.8 (hard to tell with just colors)
My tank is open top so i just add more dechlorinated tap water to fill it up. I guess the mineral concentration is being concentrated as the water evaporates. I'm not dosing anything right now but I just ordered some Seachem's Flourish (the all in one). The tank is miracle grow with a sand cap.
Should I be topping off my tank with distilled water?
I wanted to have harlequin rasboras, cory cats, and some shrimp in here but with my pH being this high now that might not work.
Should I buy something to lower the pH and GH or should I just do a water change and use distilled to top off from now on?