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Originally Posted by Major nc
You people are awesome! Wasn't expecting soo many replies so fast. My system is around 115 gallons total water volume including the sump. Running for 2 and half years. Mixed reef large lps and a bunch of sps. I use a 4 channel doser. 2 part Alk and Ca, Mg, and Smirnoff lol. So just to be clear, are we talking about the Reef Crest calcium chloride dry powder and calcium bicarbonate for Alk? I don't do a lot of water changes. 5 gallons every week or two max. But everything seems to be growing well.
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So I use calcium chloride (calcium) and sodium bicarbonate (Alk). If you really wanted to get it in bulk (save a bit more on cost) go with the schlobster containers of each. I would consider doing 15-20% of your tank water volume to assist with nutrient export and cal/alk. It wouldn’t be that much more in terms of work. That being said if your system is working, nutrients are in check and everything is growing you could probably stay where you at. Just food for thought, hope this helps!