Can I get some opinions on my system plan

[BobinCovington]

I am finishing building my sump for my tank out of a 29 gallon tank from DonW and will be working on my top-off system soon. I currently have a 29 gallon reef display and will be putting in a larger 70 or 90 gallon tank at some point after I get the sump/top-off system done. I "thought" I had everything pretty well figured out, but now I am doubting myself.

I had planned to run a G-2 skimmer in my sump and a kalk reactor with my evap top off system thinking that would be a good simple design. I had not figured on a calcium reactor only because my tank size is not that big and my coral load is not that big either.
I had a conversation with my LFS (who is a very reputable guy) and he said the kalk reactor won't do anything for the alkalinity, only maintaining my calcium. Now I am confused, I thought my kalk would keep both my alk and calcium levels at acceptable levels with only a little dosing here and there.

Can anyone chime in?

 

[DonW]

Bob,
Kalk will maintain both CA and Alk to a point. Once you get past that point then you will need to add a ca reactor or dose.

Don

 

[pondfrog]

you are the correct one here!!

Kalk will help to keep both your calcium and alk in the proper levels, however it is much better at keeping the alk in place. A tank drawing a lot of calcium will usually need calcium additions in whatever form in addition to the kalk. In a display your size the kalk should suffice. You may want a powdered calcium to supplement from time to time after testing. Seachem makes a great product.
Steve

 

[mojoreef]

The LFS guy doesnt know Bob thats all


Mike

 

[BobinCovington]

I'm feeling better now thanks guys

I will stick with the original plan on the kalk reactor but maybe as demand increases for calcium in my tank, I'll add a Calcium reactor.