Did some pruning and defoliation at beginning of week 8 then flipped the light a couple of days later. Top dressed with epsom salts, gypsum and rock dust. Noticed some leaf discoloration so checked the soil ph and it was low on all four girls, 5.7-5.9. Added a tbsp of hardwood ash each to the top dressing but had to wait until the end of the week to water it in. Checked ph after watering with 7.6ph well water and the oldest girl is now about where I want her at 6.5 with the other three at about 6, will add another 1/2 tbsp ash at next watering.