<BLOCKQUOTE><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><HR>Originally posted by kevjtomy:
<STRONG>You will want to wait until someone more knowledgable responds to my response, but I know I have read about pickling lime from the grocery store for kalk, and baking soda for your alk. If this is true, it would be a cheap way for both. Like I said, see what others say, or try a search on this board for those two products. Good luck...</STRONG><HR></BLOCKQUOTE>
Kev--I'll respond to your response!
Pickling lime is basically the same as kalk--Calcium Hydroxide. Definitely the cheapest way to supplement biominerals in a reef tank. You can get it for about $2 a pound and that will last a LONG time.
Also, if you're using pickling lime/kalk properly, it should provide all the Ca and alk you need, because it's a balanced supplemenation method. Therefore, I would counsel against using buffer if you're using kalk, because the net result is that you'll end up with your alk high and your Ca low. If you use kalk, your system should stay balanced and if you add buffer in addition to the kalk, you'll be adding excess alkalinity and possibly end up with a biomineral imbalance and a low Ca level.
HTH