Ashamed to admit it but I meter tested the ppm of what I had been feeding the girl and it was around 3200. Way hot so the flush was needed. canna has a nutrient calculator and at .5 gal it says ppm should be around 900. So I am sure there are some heavy nutes still in the soil after the flush. Its been 2 days or so so I am going to feed her probably 500 ppm using RO water starting the next day or two. But when I put the nutes in the RO water it drops the Ph and I need something to get it around the mid 6 range before pouring it in. Here are some photos. Any suggestions?

Thanks to all for looking and commenting