Originally Posted by Mermaid
Thanks for the suggestions. What test brands are the best to use? In saltwater I used Salifert.
I guess the reason I am reluctant to use tap water is because of the phosphate problem I had with saltwater. Don't want to go there. I know it is required in smaller amounts in a PT but want to hedge the algae problem before it starts.
As I said, the tap water there is fine.
Oqsy, I know the town well, my relatives live there as well as a friend or two.
I also know the fear the poster is dealing with about the tap.
If you feel excess PO4 causes algae issue, I would suggest you offer some support there.
The issue with the tap is one of GH/KH, they may need to add more, but given the geology, which is limestone, I highly doubt the tap water will be too soft.
But water utilities do often use different sources and that can cause KH/Gh issues depending on their supplies and time of year, do not become complacent with KH/GH and there are no issues.
This is not a Reef tank, there are only a few variables in tap and RO is never needed except in 3 extremly rare cases, 2 of which were well water and high Sodium chloride and the tap was 2ppm of copper in another.
I did not suggest a specific pH to target, so the the water source would not matter unless it had something like Copper in it.
There are places in TN where there was a copper smelter, killed everything for miles around. You can request a water report and see what all is in it.
Often it's on line. PO4 is seldom measured, but additions help plant growth, so that's not an issue.,
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