Stephane I have been meaning to ask you why you decided to add the big co2 reactor. {besides, like many of us, you like toys}
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 ops: Toys ops: and Im searching someting set and forget the kalk
reactor have to be refil each 1 1/2 week and if you dont do it at this exact time in a tank with Hight consuption the alk ans calcium go dow prety fast and you have to adjust them
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Was your calcium demand from the sps, out growing your kalk reactor?
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If I have refill it more often and on shedul it could do it witout any problem. I have a very big demand 3 gallon of very milky stuff each day but the problem is I was somtime to laysi to refill it on time and my calcium and alk lower, then it was pain to get it up with vinegar and kalk mixture
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I also wonder, does anyone just use one or the other anymore, on large tanks, or is everyone using both now?
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I only use the CO2 now to know exacly wath will be the pro and con but it is to early to give any conclusion other then for now my PH is low
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I also wonder, does anyone just use a co2 reactor and no kalk and have positive results over the long term?
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will tell you in on years
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Michael, hope you dont mind if I added questions to your thread. Perhaps we can get a good calcium/alk thread going. It may help you in some of your decisions.
The only problem with kalk, is its high ph, {over 12}, so if its added to fast it can drive the tanks ph up. Its the most common calcium additive world wide and has been a stable for almost 20 years.