So here's the deal last wed. I fed my mango and avocado plants guano tea made from found guano on fri. the mangoes looked fine but the avocados started showing signs of shock. this is what they look like today 6/7/09. I have tried scraping the top layer of residual guano and flushing but so far no improvement. I am considering trying a hydrogen peroxide solution to bring more O2 to the roots. what should I do? Any help will be appreciated, thanx.