Not sure, it will last longer, but how long? It'll still fall out with high O2 etc.
I know there's a Cu table for alk and the chelator ETDA etc and perhaps other chelators etc.
For a minute I was thinking about setting up several samples and controls, then waiting 2, 3, 5, and 7 days to titrate and measure Fe. Then that just sounded like way too much trouble I'll see search for sheets on different chelators vs. KH before trying this on a real tank. Thanks.
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