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ca1ore · 02/14/2018, 12:24 PM

The only credible reason I can think of for keeping a bit of a gap is to account for the wall being out of plumb. When my tank is perfectly level, the gap between the wall and the tank is 1/2" less at the top than it is at the bottom. My house is old and everything has settled.

02/14/2018, 12:24 PM	#21
ca1ore Grizzled & Cynical Join Date: Apr 2006 Location: Stamford, CT Posts: 17,319	The only credible reason I can think of for keeping a bit of a gap is to account for the wall being out of plumb. When my tank is perfectly level, the gap between the wall and the tank is 1/2" less at the top than it is at the bottom. My house is old and everything has settled. __________________ Simon Got back into the hobby ..... planned to keep it simple ..... yeah, right ..... clearly I need a new plan! Pet peeve: anemones host clowns; clowns do not host anemones! Current Tank Info: 450 Reef; 120 refugium; 60 Frag Tank, 30 Introduction tank; multiple QTs