For logging purpose, I just use MS Excel, since all the water parameter measurements or the addition of additives/coral foods are still done manually.
Items that I note on the log are water parameters (pH, KH, nitrate, phospate, calcium), additives and coral foods. Just make it simple, the most left column is for date, next to it are water parameters & additives. The most right column I put 'remarks' column.
The tank has been cycling for a few weeks now, for a while ammonia was stuck at about 3ppm. Then i started adding MB7 and within 3 days ammonia was at 0. NO2 is still high, but that will be coming down as well. So far, I think MB7 significantly speeds up the cycling process.
I will give it some more time and post more detailed info.