But you don't need to use kalk at all as you have no corals and do not need a cal/alk supplement at this time..
At this point the only thing you should be doing is water changes of what equates to like 20% every 2 weeks if that..Thats just commonly recommended normal maintenance..
No additives are needed at all and any store that tells you to buy bottle X is simply trying to take your money..
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Who me?
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