Well alittle update again bought.a 10 gallon aquarium from picses pet emporium 16.99 a eshopps nano over flow box 54.99 I belive...also bought a outlet nozel into tank from sump 4.99...my plans are too use 6-8 inch baffle walls in sump restrict it too about 6 gallons leaving lots of room for water in overflow box, pipes and skimmer ect...i redid calculations and figured still roughly only 9 ish gallons in my 17.5 gallon nano quiet the water displacement lol
... So still under the 20 gallon rules yay hahahaha...ill get pics up soon of the new equipment also upgraded power head from 750 gph too 1400 gph for better water flow...a Awsome trade off fellow canreefer... Use the 750 in my mixing bucket