Dont use the shark bites ... they will inevitably leak .. everytime !!!
I'm a plumber by trade and would strongly advise against those fittings as a permanant solution .. as a temp ok but never as a permanant solution ..
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Starting fresh ... 90 gal, 40gal sump, sundial T5HO x 4, 2 x koralia 2's, ASM G1X skimmer 
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