Here's info that was posted in a thread I had on dosing. You need to know how much of ca, mag and alk you are going through in a day/week in order to properly dose. So before doing anything, test over the next few days and see where things are at. Great advise below!
Quote:
Originally Posted by ChizerBunoi
Have you figured out how much to dose to maintain your water parameters? Pick any time of day and do your water tests for all 3 (CAL, ALK and Magnesium). Go on the bulkreefsupply website and use their calculator to find out what you need to dose to raise your parameters back to normal levels. Dose your tank manually.
Now the next day do another test at the same time as the day before. Whatever the difference is, that will be your maintenance dose. Then depending on what is low (most likely ALK), increase it in equal parts. If you need to dose 15ML to raise the ALK up 1 dKH then make sure you dose the same amount for CAL. In the morning dose Calcium and in the evening Dose Alkalinity.
Keep at that pace for the next 3 days and then do another water check at that same time. Once the test results confirmed that your water parameters are that level that you want, it should be stable. Then setup your auto doser according to what you have it set for.
Every two weeks, do another water test and adjust your maintenance dose accordingly. If you do large water changes of 20% or more, your ALK will raise accordingly. This could STN or RTN some of your SPS corals. So my advice is to keep your ALK at a higher level not at 7 dKH.
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