Thank you both so much.
At the moment im going to try and keep this grow, it is a NFT system. The pump is back to 15mins to every hour, we have special pads at the bottem of each plant to make sure moisture is always present, or would you still recomend 45 - 1.45 on and 15 mins off? Also is the is one block persiod or would it be better to hav 15 mins on 15 off or 30 on 15 off ?

I will be taking care of water today getting distilled water and replacing it. Will have only that for 3 days, then change the mix to 1/2 strength nutes as recommended and we will see from there.

Will keep you all posted.