No proper pics yet. Here's the most we can get without asking them direct - http://www.tropica.com/pdf/aquacare/...ide_uk_web.pdf

I think I'm going for a 2cm layer (2x recommended) topped with 4cm+ of quartz.

Interesting on the NH4NO3. Perhaps KNO3 and KH2PO4 seperate would be safer then? I was just thinking of the easier all-in-one dosing.

Is the NH4NO3 also likely to induce algae with mainly slow growers?