Experimental daff

I've been playing with the functions on my camera again.  This one allows me to extract all colour except the one specified - in this case, of course, yellow.

In other news, we extracted lots of blanket weed from the pond, and found several newts in the process - but of course I didn't have my camera with me.  We've now added some stuff (little beasties) that extracts the nitrate from the water, and thereby suppresses the growth of blanket weed.