Iron and Trace Element mix Aquarium Plant Fertilizer Recipe

Use 71 grams of Plantex CSM+B Fe+trace mix in one liter of distilled water.
This gives you one litre of 0.5% iron+trace solution.
Use 2 cc per 4 gallons. Find a 5cc cap and use that bottle to store it.
Ie, one capful per 10 gallons. 5 capfuls per 50 gallons.
This will raise the iron by 5ppm.
Do this 2 - 3 times a week, although 1-7 times a week is better than nothing.
-- Richard Sexton, 2006