wow that water is high if you can let water sit for 24 hours to let chlorine evaporate, then ph water to 5.4 that way it can drift up slowly over the week dont add any nutes at first just let the seed use the tap water, until you start to see yellowing happening then dump your res water fill system back up would be help if you a container that you could store water in the night before you dump res water so most chlorine evaporate's, now add your nutes which ever brand your using at 1/4 strength the reccomended dosage on the bottle, if your using 2 part a+b nutes mix in the A part first let it move round your system for approx 15 mins then add equal amount of part B nute let it go round for same time 15 mins then ph your water to 5.3/5.4 this way you allow for ph to drift up slightly an use all availiable nutes, over the next week you can increase your nutes to 1/2 strength or even full strength let them have the 1/4 strength for about a week so they get use to the nutes if they look like they need more after the 5-6 days add little bit at a time in parts a+b in equal strength but give a little time inbetween part a an part b,if the mh light is all you have raise as high as you can as some said 3ft, that 1000 watter is gonna give of some heat, personally for the first couple of weeks i would use flouro's mate 1000w will be great for flower an veg but i would not do seedling with it,theres a rule with hydro k.i.s.s, keep it simple if its your first time doing hydro dont worry about everybody using all these additive's you can at a later date when you feel more comfatable, you can achieve same results just using a simple grow an bloom formula 1 part or 2 part, try to keep water around 64-69 degress make sure no light is hitting water an allways ph water to 5.4 hope this helps
