Quote:
Originally Posted by Cugio
I just picked up a Hanna phosphate digital tester from Dave (concept aquatics) and tested my water. It is at 0.049 ppm. Should I be concerned? I only have LPS in the tank and would ideally like to move to SPS in the future. Tank has been up for almost a year and been running on Calgary tap water all this time. No algae issues at all except for the typical build up on the glass.
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The phosphates likely did not come from the tap water. Try checking tap water for phosphates. It'll probably read zero. At least I read zero when I tested tap water for phosphates a few months ago.
Your phosphates are probably being introduced through fish food. If phosphates are a concern to you try running some gfo (granulated ferric oxide) in a reactor.