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right , my thinking though is that the coil could remove all of the oxygen but there should be some minimum ammount of media to remove nitrate of a given total ammount. For example 75 ft of tubing and X ammount of media is good for X ammount of nitrate...\
Also I forgot to add that mine is gravity fed.
By the way, can anyone suggest a good place to post these pictures, When I try to post them in my gallery I always end up with small pictures that are tough to see in detail. would also be better to post text with it. I'll put it all together I just need a place to post it all.
Chris
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