Originally Posted by keitarosan

ok, one of palhs member - a local philippine forum claimed that he's using vinegar as a chelating agent for fertilization. he said that instead of using tap water or tank water to dissolve the dry ferts. he's using vinegar. he also claims that even with low light, his high lighting requirement plants doesn't look leggy and are very healthy. he then concluded (or thought) that vinegar is a good chelating agent.