Well - It seems I comply with the requirements to comment on this.
Without trying to endorse it, I do not perform water-changes and haven't done any for about a year and a half, and so far no visible regression (yet)
Bisides alk, Mg and Ca, you could test - to a certain extend - for elements like iodide/iodate, boron, strontium and potassium,
but you can't for Na, Cl, SO4, amino acids and 98% of the "necessary" trace elements.
IMO; as long as you're not able to get a general overview of what is going on in your tank, regarding all these elements which are just half of the things you should know, one should perform water changes.
As for trace elements, maybe you should look into the RED SEA program.
However, they do recommend water-changes too
Except for phosphate and nitrate control (chelated iron and carbon/ sugar and vinegar) I'm not a fan of DSR as a method because it doesn't allow for ionic balance.
Only time will tell if it'll work for those who are using a calcium reactor and for those who don't and do not perform water-changes.
Without trying to endorse it, I do not perform water-changes and haven't done any for about a year and a half, and so far no visible regression (yet)
Bisides alk, Mg and Ca, you could test - to a certain extend - for elements like iodide/iodate, boron, strontium and potassium,
but you can't for Na, Cl, SO4, amino acids and 98% of the "necessary" trace elements.
IMO; as long as you're not able to get a general overview of what is going on in your tank, regarding all these elements which are just half of the things you should know, one should perform water changes.
As for trace elements, maybe you should look into the RED SEA program.
However, they do recommend water-changes too
Except for phosphate and nitrate control (chelated iron and carbon/ sugar and vinegar) I'm not a fan of DSR as a method because it doesn't allow for ionic balance.
Only time will tell if it'll work for those who are using a calcium reactor and for those who don't and do not perform water-changes.