Hello. Looking for advice re skimming. Whilst still awaiting aquarium delivery ( 120cm/340litres).I am considering my skimming options. Possibilities appear to be skimmer on intake pipe to filter(bio master 850) e.g evolution aqua pipe work, separate skimmer/internal filter( seem quite bulky and obtrusive) or no skimmer. Very keen to minimise equipment in tank but realise I may need a bit more flow than from external filter alone, perhaps a simple small powerhead which seem to give good flow for small size and wattage. Any recommendations appreciated.