I recently purchased a Fijicube 108g EXT aquarium and it is my first time plumbing an aquarium. The attached image has their recommended plumbing layout. I was thinking of adding unions and ball valves at the indicated positions. can y'all give some input on their proposed layout and the additions I'm thinking of? My feeling is that there are a lot of 90 degree turns but I'm not sure how much that matters and I reckon it is probably harder to plumb with 45 degree elbows.