ok well the leaves have gotten even more yellow since i posted. so what ill do is check the pH of the tap-water and the runoff water and then ask you what i should adjust the tap water to. would it be ok to use pH adjusters on seedlings like this? also im planning to buy a bucket to use as a resivoir, so i can dilute in correct amounts and heat it too.. how long do you reckon i can keep the water for before it becomes too stale to feed the plants with? also do u have a rough amount i should feed them and how often? more pics to follow. hopefully i can rescue these!