fruitsmoothie (4strains of fruit tastes)

i hope the lemon holds on for another 2weeks, its having some lower PH problems, poured in 6.5 and the runeoff was 6.0. orange bud is doing oke, might have a bit lower ph in those also, will checking next watering same for the king juice, also might have the same problem i only give them 1feed per week, and then its water evry1-2 days