Take this post as an interpretation of what-you-will, but these are effects that I've never experienced without the use of Penac P & Penac W in the substrate, and i'm always amazed when I see it at the start of a fresh tank.
This was 5 minutes after the tank was filled:
Now my timer is set for 7pm CST to 5am CST so I can see the tank, so when I woke up this morning at 9 AM, this is what the tank looked like:
Rapid Oxygenation (ignore the riccia stone on the rock, I had an extra I tied I don't know what to do with yet) :
Kind of beautiful, don't you think?
P.S. if you've found these techniques valuable, help share the information with new comers by linking back here in your own journals when you use my techniques!