everything is clear here )) go and check my previo...

To answer your question about the moby dick grow that you have , firstly you have overwatered it and thats why it started to turn yellow , then you piled a bunch of nutrients into the medium turning the leaves really dark (nirtogen tox) and they have that elongated tip giving it the "claw" like effect . My advise to you is to only feed it with PH corrected water for a good while and being that the plant was over watered you will wanted to water lightly till the medium is dry enough for a good watering . A good way to measure when you need to water is pick up the pot before you give it water , then do the same after so you have a rough idea of weight with and without water so you will better be able to judge when to give your plants water . I would also advise that when you start using your nutrients again to only do so every 2nd or 3rd watering at 1/4 strength and increase the dose as needed . I say this because you want to allow you plant to be able to absorb most of whats in the medium before adding new stuff in , preventing nutrient burns or nutrient lock outs due to having to much calcium on the roots . I hope this information helps shed some light into your grow to help you get those ladies back on track rocking and rolling ! -Happy Growing!