I KNOW GOOD CURRENT IS IMPORTANT. JUST WONDERING, ARE AIR STONES AND WANDS GOOD FOR CREATING CURRENT AND ARE THE BUBBLES GOOD FOR THE TANK/FISH. I HAVE A FLUVAL 305 CANISTER AND A LARGE AIR PUMP THAT RUNS A 6 INCH STONE AND A 18 INCH WAND IN A 55 GALLON TANK. THERE SEEMS TO BE ALOT OF CURRENT IN THE TANK. I AM GOING TO PICK UP A SKIMMER TODAY. WILL THIS BE SUFFICENT FOR MY 55 GALLON? ALL I HAVE IN THE TANK RIGHT NOW IS A CLOWN, A DAMSEL, TWO CRABS, FOUR SNAILS AND ONE FLOWER ANEMONE.