toxicity

Hello, I believe my tank is experiencing nutrients toxicity. I can see serious iron deficiency (new leaves are light green with dark veins & necrosis on the tip of older leaves), potassium deficiency (weak stem especially at the base & some melted at the base as well), calcium deficiency (root...

Hi. I've posted this question to several farcebook aquatic plant groups but so far gotten no replies. I'm hoping there may be some wiser minds here who can help. As a new member i can't post links yet but will endevor to do so when i can. For now i'll otherwise include the name of the paper and...