Hey mate, yes i believe the replenish is very similar to the trace hard but more concentrated. The koralcolor dose is the one that does the damage so to speak.
If you didn't want to keep heaps of media like me you could simply dose regular bacteria as long as it's good quality like the AF stuff.
The less input to your water the more potent the control you have using only two things dosed once a day. If you keep it very simple there is very little left to doubt as to why certain things happen in response to a change in only those two things.
I know many must think it can't be as simple as what i am doing but it really is. There is no other trickery involved so i would find it very surprising if someone followed the same regime for 6-8 weeks and did not see a very obvious change to the overall way your entire system functioned and an overall improvement in every pigment color.
Thanks for the advice! I have 4L of matrix in a 90g, so we will see how if works. Did you sees it with bacteria first or just waited?