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Seachem Fe test issues


marcop

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Hope for some extra help here from somebody who is using or used this product.

I have conducted both a Normal and Low range test on aquarium water. the only colour is a light yellow for both tests. same colour as the reagent. have left the test for up to 45mins and no colour change.

I tested tap water, just the same yellow tinge.

I have even added two/three drops of API Leaf Zone with 0.1% Fe to the tap water test and the aquarium water normal test and the colour did not change.

I am trying to track deionized water to do a reference check soon on the kit.

Any ideas?

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