I've started the week with a flush of pH 6 water in order to compensate the pH fluctuations of the previous week. The Fuel D.ogs are looking very nice. They will be transferred in a bigger room this week.
The White Widow and the two Pineapple Express are still growing slowly. That's why I think the flush is going to be beneficial. In order to unlock the roots access to nutrients uptake, and the probable build up of nutrient in the substrate.
@NuttyYeti, Yeah I really enjoyed this strain, I was looking for Sour Diesel seeds but couldn't find those last year so I found out this strain. It's a really good day to day sativa I never got bored from smoking it every day.