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Discussion Starter #1
Hey!
I have super high Phosphates in my tank for reasons I'm still looking for. Tap water is 1ppm, but my tank is reading over 5ppm!! No joke! I also seem to have an iron deficiency, but I dose over 5ml a week into my planted 30gal. New leaves are pale yellow. I've been working on this for a while...some people suggest its my carbon insert in my Penguin filter thats causing the Phosphate spike. When I removed it I got cloudy/green water, so I put it back in..

Anywayz, I came across this article on farming ferts...may spread some light on the subject. What do you guys think about this theory??

"Excessive phosphorus, particularly in combination with a high soil pH (above 6.5), can induce micronutrient deficiencies of zinc and iron. Zinc deficiencies usually show up in early spring as a dwarfing and yellow striping between the leaf veins. Iron deficiencies produce a yellowing of leaves with veins remaining green. "

Thoughts???
Nick D
 

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Nick, do you add KNO3?

Adding nitrate will drive down phosphate in a phosphate dominant tank, if you have adequate lighting and plant health. Usually phosphate is dominant in tanks that get lots of live black worms or bloodworms.

Jeff
 
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