Originally Posted by
Ray28576
Do you need to add trace elements by hand or do water changes put them back in the water? Im talking about things like calcium, Iodine, etc. :notsure:
Testing for anything you want to dose is the only acceptable way to dose anything
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Calcium usually people need to as it is part of your buffer system. Iodine, rarely to never, as salt mixes in general give youa ll you need, and iodine test keits (i have gone through 2) are inaccurate and should be used only as a guideline.
Water changes, properly mixed, will give you all the TRACES you need. You should be testing for alkalinity and calcium, pH, ammonia, nitrites, nitrates, and if you can swing it, magnesium, and to a lesser degree iodine.