18 is better than 14 but 24 is easy to look at and a little more hight is better. 6-8 feet is not bad just make sure you account for it when getting a pump I would go a little bit bigger of a pump than you think you need you can loose head in all sorts of places and it adds up....safe than sorry thing. In my mind the width is important as well galons fade to the background as I have seen 200gal tanks look smaller than 90s (sort of) go look at the different sizes tanks as to look at all the sizes you are thinking of, then look at them again..........you can deal with a tank thats a little bigger than you wanted but once its to small
as you can see from just a few posts.......its blender time
I have seen this burning from t5 and it is a factor in the tank hight.
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Richard
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My wife believed me when I told her it was only going to cost about $500.00. that was over two years ago and I'm still grounded.....
