That would prob have been just about clear Simon.
today has been stressful but fun... I decided to put tropica substrate below the sand even if it wasn't essential...I felt a bit happier doing it that way, I also put more sand over that, ~2.
Cba with golden ratio but maybe... I was thinking of sacking of the java fern too. not sure...
I've got TPN+, tropica root tabs and easy carbo...
How much did what cost me?

Waaaaaaa 2 questions
1 what is golden ratio
2 How exactly do you attach Java Fern to bogwood?
tells you how to use it for fish tanks.