Article on the degradation of limewater

[randy holmes-farley]

If that is the reason, yes, I'd say to ditch it. I can't see a benefit and can at least hypothesize a harm. It will be interesting to see if anything different happens when you don't aerate it.

If you were using it in some other application (like straight top off), aerating it might be good, or at least not have a down side. Aerating salt water made from RO/DI water can also be important, especially with some salt mixes that are very deficient in CO2 (high pH; over pH 9 as Craig showed in his salt mix article).

 

[Jeff Hood]

I have very high Co2 levels in my tap water that comes from a local spring. 50 ppm.

I run a R/O unit to a 100 gallon resovour and run two bubble wands in it to get rid of the Co2 down to less than 1 ppm measured by a Lammotte test kit.

I then pump the water from that tub with a Liter meter through my DI cart and directly into my Kalk reactor. Then it flows into my sump for topoff at a rate of 10 gallons per day. System is a total water volume of 800 gallons and the tank is roughly 500.

I can get my Kalk powder in there to almost completly disolve with very little sediment. I still get some, don't get me wrong but it is much less.
Also as a side note, I do get Much more life out of the DI carts- almost double- by degasssing my R/O water, and I don't waist water from the DI cart by letting that expensive DI water sit in a tub and adsorb things or evaporate. I only pump water through it when I need it on demand. The liter meter does a very good job pumping through it.

FWIW.

Jeff