Is it time to increase PPM?

If you grow in coco you need to lower ur ph A LOT! In the early stages u want 5.5-5.9 in ph and in the later stage you want 5.9-6.2 then ur in a sweet spot. You need to feed your plants much more nutes if you only have 600ppm because that’s what I feed my seedlings. You should be laying around 1500-2000 if your plants start starting to show signs of flower! I give my plants 2300 right now and they are in day 55 week 2 flower. If your plants has started to show signs of flower u need absolutely to start to give it some flower a/b same with that a little bit at a time not all at once. Do that and ur plant will be fine otherwise it won’t grow any buds at all. After 1/2 week just give it flower I think if you have that kind of nutes. Ur plants is small so take it easy rise it a bit each day not all in once!