Bubble Gum Auto Fem in a cupboard

I have 2 auto fem bubble gum seeds from 00 Seeds going in the cupboard at the moment. One is a week behind the other and is looking a bit sickly. The other, whilst a bit lanky seems to be doing all the right things. It has shown buds for about 7 days now, so we will see if the other will start to show soon too. If anyone knows what might be causing the leaves on the sickly one to look the way they do i would love to hear it. They were getting a bit of seasol now just a tiny bit of potash at the start of the week and water only when needed otherwise.