Topped up tank few days ago with a little (30mlA & 30ml B)more nutrient because when u add water alone it gets diluted and it's the 5th into 6th week of flowering which the buds are starting to fill out.
Now its Monday when i would normally change the tank for fresh water and nutrient but this week I'm leaving the pk13 14 in for few days more. I'm not adding more as i would be over fertilizing with pk.
On checking the water level it needs another bucket(10ltrs) to fill tank to its full level then I'll ph it and leave for a few days s more, checking ph daily