I'm using Plagron organic nutrients and I usually add it to rainwater that I collect myself. I didn't get time to collect any this week so I had to use water from the tap. When I added the nutes to it, the whole mixture turned milky straight away. The soil was bone dry so I had to use it anyway as there was nothing else available to me.
What would cause this? I thought it might be the chlorine so I filled a bucket yesterday and left it 24 hours to evaporate off. Added nutes and same thing happened again. It looks like it turns to clumps and settles on the bottom. I've added pics of a sample of the mix. My tap water is very hard which is why I use rainwater when I can

What would cause this? I thought it might be the chlorine so I filled a bucket yesterday and left it 24 hours to evaporate off. Added nutes and same thing happened again. It looks like it turns to clumps and settles on the bottom. I've added pics of a sample of the mix. My tap water is very hard which is why I use rainwater when I can
