I've made and repaired plankton nets from an appropriate grade of nylon
bolting cloth - sorry, can't remember the nomenclature of mesh-sizes and the
name of a British supplier wouldn't be much use to you, but you could try a
biological supplies house or a supplier to the flour-milling or similar
Well, you know, I'm currently dipping water from a spring or catching
it from a roof. Even at best, there's going to be straw, twigs and
'clumps' in water I use. It's important to stir preps in clean water,
I can readily feel the difference when stirring water that has
something other than
