Well I’m trying to clear copper from my DT. 300gallons. I’ve completed 6 (180-200 gallon) water changes. But I’m always sitting on .21-.19 I can’t explain it. Yesterday I read copper at .21 I then completed a 150 gallon water change. Waited an hr. Checked copper. .21 once again. Makeup water is Rodi. I’m running poly filters and cupasorb. New poly filters are 4 days in and not changing colors. Not sure I should continue massive water changes or except that readings are bad. I need to make sure copper is clear before adding my Bamboo sharks and coral back in. Any thoughts? Can the Hanna checker be off. I find it odd that the rocks could be leaching exactly .21 in copper every water change.
Any help appreciated
Thank you
Any help appreciated
Thank you