I add 3ml every night before the lights go off. Here is one of my Sps with noticable color and PE improvement after one week.
Before Acropower on Jan 4th
Less than one week of using Acropower on Jan 10th.
If you can't see it in the photos, then you will have to take my word for it. Colors and PE is better.
I am not great with a camera. You can probabaly tell.
Thanks for the example! U can see some diffrence . Keep us updated