Martin, my fertilizer is russian know-how ))) It's an infusion of banana peel. It is good suitable for tropical plants in Siberia. It contains very little nitrogen and iron, and sufficient calcium, magnesium, potassium and phosphorus. Nitrogen excess can lead to variegation loss. Your chinese ovata may be 'Lutea'. My 'Lutea' are from China too. I think 'Lutea' can turn into 'Alba' in full sun. Light fragments of 'Lutea' become more light yellow under LEDs. While the shoot 7 on my pic remains light green under linear fluorescent lamp. Hi, Ben! What do think about them now? Oksana.

Just some random closeup shots from around the house.

They look great, I love macros, I found a macro lens for my iPhone, and it works pretty good. This is my Lithops splitting, not sure why there are four leaves in there, lol

Good basic articles. I think gardenweb used to have "stickies" that permanently stayed as the top post and served to educate would be posters regarding the rules of the forum and posting procedure to optimize your success to get the ID you need. A brief article about basic macro photography would be among my highest recommendations for such a sticky. Every time we have a post from 20 ft away, I think, "name this person"