also, once you have your desired levels comes the tricky time consuming part. so you have your set levels where you would like them. next you should stop dosing your tank for about a good week. each day test your tank water parameters you would like to dose (ex: alk, cal, mag). if your tank is heavily stocked with sps and /or clams, you will notice fluctuation in your levels dropping each day. a trend will start where you might see that your different levels may drop by a certain number. within the wekk, you should get a good average. use that average and go back to one of the helpful calculators and punch in your numbers. it will give you what you need to dose in a day to maintain your desired levels. use that number to program you controller or dosing unit.
if you are using a dosing unit, be very careful on what it really doses. i made the mistake and took for granted that it was always on que.
hope this helps.
