Hi My White rhino is 3 weeks into veg from clone, Many of the large fan leaves are yellowing. Leaves grow normal shape no twists or curls and grow fast but are a BRIGHT yellow, then eventually turn green but not fully as you can see in the first pic. I am using 50ltr pot, Perlite, 1000w HPs, Canna Vega, PH 5.8 , EC 1.9 (str8 from tap PH 7.8, EC 0.4) Temp 24cel, weekly flush, Ph drops to 5.4 after a cpl of days? Should i be adjusting the PH of the water before adding nutrients? Is adding the nutes to PH 7.8 water then adjusting the PH with PH DOWN,locking my macro nutrients away b4 i can adjust it. Does adding PH down UNLOCK nutrients that have been locked by high ph? Hope this makes sense..