Thats also a good point Robert, meds can do some damage to the plants.
Todd, if you can get your hands on Potassium Nitrate aka Salt Petre from the
chemist or pharmacy. Add about an 8th of a t-spoon per 10 gallons of water.
This should bring the Nitartes up a tad. You could add a small ammount of
trace ferts but I'm not so sure if its necessary, how big is your tank, how
big a fishload and light do you have?
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**So long, and thanks for all the fish!**