U seem to be going in the wrong direction now lol....U need that 20ft. length
Do you not have enough room in ur basement to re-attach it for the 20' span? Not a die hard cichla keeper like most but i only keep 2 in my 300....2'x8'x30" tall. If i were you and i couldnt fit the 20' length i would make two 10 footers and stack them on a rack. Gives you all the gallons it would be attached and no waste of tank. I would also just chain them together on a single sump. Far easier to take care of more water than less IMO. .
