im not too experienced of a grower, so take my advice with caution...

but the tips yellowing looks similar to the problem I had, and this was indeed the beginning of nute burn, im sure if you flushed it with a non-nute watering once it will probably correct the problem.

Watering, Ive had an overwatering problem once, but mine seemed more drooped... so yea

wait for stinky to come save the day :thumbsup: