- Joined
- Dec 16, 2009
- Messages
- 4,032
- Reaction score
- 4,881
Due to Xavier s advices, I begun to learn more and more about slipper feeding. There was an appointment about citric acid....Xavier mintioned that citrate enchance the rate if bacterial infection....I amazed because Erwinia can t grow under 6,0 pH....So 5,8 seemed to be optimal, and i think the same as Xavier s thought, that Ca is useless above 6,5. So i made a solution, ec 500 uS, 20/20/20 npk, cao 7, mg 3,0, n urea 13%, with ro water. pH was 6,5. I set it to 5,8 with citrate. 24 later pH was 6,5 . I set it again to 5,8. Another 24 hours later pH was 6,5, solution start to become misty, ec decreased from 500 to 450 uS. I think this is why Xavier said that citric acid incease the risk of erwinia infection. There is some citrate salts, maybe ca, what precipitates from solution. Increased pH and decrease Ca is favourable for erwinia, in fact. Today i made another tank , 485 ec, pH 5,75, adjusted with HCl solution. HCl increased ec just 3-4 uS. Any thoughts?Opinions?
Last edited: