is it ok for me to add calcium straight to my sump and it is a liquid or should i add it to the water when i do my water changes said:First you need to test to see if you even need to add anything to your tank. :wink: Calcium, alkalinity and magnesium are the three most important elements that have to be in balance in your tank. What are you keeping in your tank and how long has it been running. Please list your current parameters such as ca, alk, mg, nitrates, ph, temp, nitrites and ammonia along with additional information on your setup.
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