hey guys, i have an 8ft x 2ft x 2ft tank on lay-by coming in about 2 weeks, i've already got a fluval fx5 filter system that I'll use for it, but read somewhere that the bio balls can drive up your nitrates after a while? I've got a saratoga jardini and i intend on only keeping him and only him in the tank, what recommendations would you guys give for having the bestest, cleanest nitrate free water possible for my guy. any advice would be awesome thanx