'Super Water'?

[funkngroovy]

Here in Australia, most of us use NSW for water changes. Most Aussies live near the coast and our water is clean. I store enough NSW for about 2 months of water changes and I change about 10% per week.

I was thinking of 'overdosing' NSW while it's in storage with Ca, Alk and Mg so that when I do water changes I am also supplementing. eg, Cal could be raised to 550ppm with Alk and Mg to correspond.

I have a tank of 60 gallons mostly with LPS so the 'hungriest' consumer of Calcium is the coraline. I top off with limewater but it does not meet the needs of the tank.

I am thinking this way rather than setting up a 2 part dosing system. Because I am doing water changes so regularly, I thought this may work.

Thanks for reading.

 

[HighlandReefer]

How much kalk do you add to one gallon of rodi top-off water?

 

[funkngroovy]

About 2 teaspoons. One problem I have with this method is that we have high humidity here so don't really get too much evaporation, particularly in summer.

 

[HighlandReefer]

As long as you can keep your alk swing less than 2 dKH per day, IMHO, it would work. SPS hobbyists don't like alk swings.

 

[bertoni]

I suspect the tank will need supplementation more frequently than once a week to keep a stable alkalinity level, but the corals might be okay with this approach. It's going to be hard to add much alkalinity with a 10% change, though.