Some time ago I purchased a Photix transmitter and two receivers to do table-top and macro photography and thought I better get them out and practise some techniques. The receivers work with any flash guns so I was using one small Fuji and one old manual Metz each side of a light tent with black back and base. My granddaughter and I have been growing monoammonium sulphate crystals from a supersaturated solution, some with a blue seeding solution and the rest on a porous base. It crystallized as elongated tetragonal prisms or needles.
