Can't reply direct as need 10 posts but thanks for the advice. Yeah, think you could be right with the 1" holes, I decided 1 1/2" after reading on the bean animal overflow thread. He was after huge amounts of flow through the sump though, which I doubt I'll ever need.
Love your tank. Very tempted to go for the extra six inches of depth after seeing yours. Does the extra 6 inches make a big difference?
Yeah, keen to go external. The thing i'm struggling with is trying to hide the external overflow. My plan is to get a big sheet of black acrylic laser cut to the dimensions of my inside back panel - with holes for my two returns and the overflow between them, plus 1.5 inches at the bottom which i'd cover with gravel. To secure it I'll hang off the two 3/4 inch return bulkheads. If I place the acrylic in between the flange and gasket, it should seal. This will mean I can even remove it for cleaning once in a while! (Want to steer clear of any kind of algae on back of tank.)
Love your tank. Very tempted to go for the extra six inches of depth after seeing yours. Does the extra 6 inches make a big difference?
Yeah, keen to go external. The thing i'm struggling with is trying to hide the external overflow. My plan is to get a big sheet of black acrylic laser cut to the dimensions of my inside back panel - with holes for my two returns and the overflow between them, plus 1.5 inches at the bottom which i'd cover with gravel. To secure it I'll hang off the two 3/4 inch return bulkheads. If I place the acrylic in between the flange and gasket, it should seal. This will mean I can even remove it for cleaning once in a while! (Want to steer clear of any kind of algae on back of tank.)