12-06-2013, 05:11 PM
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Originally Posted by Matt Clark
I have had my 75g tank up & running for a month or so now, and have not been able to keep the Ph down. I have petrified wood & some plants in there, on top of Tractor Supply Black Diamond sand. I have researched this to death before I bought it, and read a TON of people say there were no problems, etc. However, no matter what I do, my Ph will not stay neutral.
Has anyone else run into this? Did I catch a bad batch?
It is very normal for planted tanks to run high ph. As carbon dioxide is consumed by the plants pH rises. In my tanks both marine and fw I have a just before lights out pH of 8.4-8.8 (purple api high range test kit). Yet even fish like neon tetras and hacetfish "requiring" low ph of 7 or less, live for years and years.
To me it is hardly harmful to any fish if pH is high because of low co2 and high oxygen.