Hi, im purchasing a 200x100x36cm aquarium (720 litres) plus a 200 litre sump. My protein skimmer is rated up to 900 litres but my total water volume is 920. Would I be okay? Im planning on having around 6-8 medium/small sized fish and a 30 gallon chaeto refugium. The reason im not sure is because I will have to be feeding 10-12x daily for a stethojulis wrasse. The skimmer I have is a bubble magus curve 7 and rated 700-900 litres. Could go with the next size up but its $160 more.