I think the fish selection is a big part of what determines the depth of a tank. I have never had or wanted a massive tank so I don't keep big fish. The smaller fish I have had over the years don't normally venture too far above the rocks unless it's feeding time so for ease of maintenance I keep it under 20". My interim tank is a 40g breeder and I have to say working on it is great but the height is only 16" so it limits my rock work height but careful selection of live rock keeps things proportional.
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07-05-2016, 03:50 AM
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