Thanks George - like the idea of the lettuce clip, but our lot seem to
ignore actual lettuce. When we tried it early on the it was only the
cleaner shrimp that went for it, and he went into quite an amusing
feeding frenzy.

If we experiement with other vegitation, I guess any human style green
salad would be ok - is that fair assumption? Anything to avoid?

Occupents BTW are : clowns (x2), banana wrasse, pyjama wrasse, scooter
blenny, dot-dash blenny, algae blennie, african pigmy angel, scarlet
hawkfish, firefish, cleaner shrimp, boxer shrimp, fire shrimp, various
(mostly) soft corels and an anemone. All small stuff in tems of fish .