NITRATE
Traditionally and i think scientifically? the hardest to test accurately for with LFS kits (in terms of ammonia, nitrite and nitrate)
It's particularly problematic if you have set-ups that run with nitrate in the 40mg/l+ range as its always difficult to get a decent reading off the colour charts.
TIP: as i have 20-30 mg/l from the tap and dont use RO or any specific nitrate reducing agents, my tanks are often in the 40-50 mg/l range(except my planted tank), so............. because of the charts being tricky with readings of 40mg/l i test with 50% distilled water (0 mg/l nitrate) and 50% tank water, i then double the result to get my reading (based off colour charts)
Last edited by Fry Lover : 04-28-2008 at 12:16 PM.
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