Yes you do if you want to avoid ammonia. As you just said, it can raise really fast and without liverock, you would need to change water up to twice a day or more, depending on the size of the aquarium and the bioload. I never change the water in my QT...never have to. I just fill up the water evaporation and check the KH to make sure the PH is stable.
You don,t need liverock but without it you really risk losing your fish from ammonia poisoning. your choice.
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Originally Posted by mark
Amazing how fast ammonia can built up so test for, but easily handled by frequent water changes and again you don't need LR.
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