Been out of the reef scene for only a year, after selling off our 150 Gal 5ft tank, so time to get back into it, but with a Nano as I travel a lot (and May needs to be able to take care of it while I am away). Designing it myself. Design is complete now and have bought many components. Will order the tank and sump this week and will post pics once I have the tank. Will be keeping fish and some LPS. Details are: Tank: 18" wide x 17" x 16" high. (= 70 litres or 18 gal approx). Low iron/Sta