We have plant-destroying puffers... Perfect little hole-punch holes in leaves, the buggers! So we get the added joy of trying out whatever plants we can get in slightly (but increasingly) brackish conditions. Fun times. Tank was looking fantastic before we put the puffers in!
We have another much smaller tank without salt that we try growing on the odd plant and snails in. Puffers cleaned the main tank of snails in no time at all!