Nano sapiens
New member
.Salt is inconsistent, I think maybe esv salt is the most consistent.
However, I can see the point of no water changes in a very stable mature system. Everything in synthetic sea salt is synthetic, why not just add those components in periodically as they are depleted?
Can the average aquarist possibly test accurately for all necessary trace elements and, if he/she could, would this be done consistently to maintain proper levels? For a dedicated few, maybe, but for most I'd say not.
Water changes are highly inefficient and near useless for trace element replenishment unless you're doing very large ones. You cannot possibly replace the trace elements with 5-10% water changes every week.
It's only real use is removing unknown pollutants.
Since trace elements are, well, 'trace', then you don't need to add much really. If 5-10%/wk WCs didn't help with replenishment then all tanks using this WC method would eventually loose their organisms. But, this is not the case with many tanks doing fine 10, 20 (or even more) years later without additional trace element supplementation. Trace elements are also added incidentally with whatever food is used, so both these processes can work just fine to supply needed trace elements.
Your statement recognizing removal of pollutants with WCs is correct, but I would have to disagree that it is 'the only real use'.