Il give it a flush and see what happens, just to be clear a good flush would be to put say double the size of the pot for example 12 litre pot, put 24 litres of water through it once right?
This is my first grow it’s a white widow x B.B auto growing in soil haven’t had a problem untill now it’s going a little slow anyway it’s 8 weeks 1 day old and the bottom leaves are turning a pale green and yellowish and some are going brown and crispy only towards the bottom nothing at the top...