06-26-2011, 12:47 PM
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Not much help in that report, hardness and pH are not mentioned. But if your numbers are accurate, and assuming they are in ppm which I think is a safe assumption, it is soft and low KH (which buffers pH). So in an aquarium, the pH will lower easily.
The best solution is to use dolomite.m This used to be readily available in fish stores as gravel, but lately it is harder to track down. But it is absolutely the best substance for hardening water (and simultaneously raising the pH and keeping it stable). Years ago I used it for tanks of livebearers and rift lake cichlids [I had very soft and acidic water out of the tap] and they thrived. Crushed coral (as in gravel again) can also work, along with Magnesium sulfate (common Epsom Salt with no additives); the coral provides the calcium, the ES the magnesium. Takes very little of each.
This is explained more in an article I added last week to the Freshwater Article section, here's the link: http://www.tropicalfishkeeping.com/f...quarium-73276/
You want to aim for a pH in the mid to upper 7's for livebearers. Medium hard water should achieve this.