Harvester, your post takes me back to long ago and almost far, far away. I am a soil grower. Sorry you had so many probs. and went hydro. Hope you come back to soil some day, better taste IMO. The tap water in my area runs 374 or so ppm. the ph. hoovers at around 8.4, water co. does not use chlorine here, they use chlor. something or other (deadly to seeds germing. and seedlings) that takes days and days to evap. out. Learn what they use in your area, if you plan to keep using tap. Some thoughts on ph. and ppm. Do you live in the desert? Rain is your cheapest easiest source of pure water. A little prep and you can collect tons. Kept 4 or 5 gals. in the fridge, lasts forever. In emergencies I use the pure h2o machine in front of the store, $0.25 per gal. $1.00 for 5 gals. In general water will move in the direction of its starting ph. Get pure water to start and its ph. or ppm will not be an issue until you put in your additives. I add nutez., add up or down to desired level, wait 24 hours, check ph. and adjust again, my ph. stays acceptable after 2nd adjustment. The 180 ppm from the tap keeps your babies from getting things that may do them some good, either in the medium or things you might add. I add nitrogen at about 100 ppm. 5 or so days b4 first low ppm. feeding. I know nitrogen deficiency will be the first thing to pop up so I try to get a jump on it. Finally I see you are growing a hybrid cross between strains that are hybrids themselves. WWxBB is no big deal for an experienced grower, I have grown plenty of WW. For a noob., tho, maybe not so much? If I were ordering seeds, I'd order strains marked easy or beginner by the supplier. With a little TLC. you can get knock your sox off dankness and you WILL notice the more forgiving nature of the easier to grow strains. Good luck. Post and let members know how things go.
. An old grower told me to use it with my well water to make calcium available to plant 
.