no...my water starts out at like 8 or better...so....I always use pH down uhhhh...8 drops to every gallon makes it perfect (perfect enough)...I only put enough to get me in the 7s range...soil is alright with a broader range of pH's..but as long as you get the runoff right again...that shouldn't be an issue...at least when I have messed up the pH I have gone back and just flushed with enough pH water to change the runoff and get it closer to what I want it to be...usually by going a little farther to the other spectrum...anyway get the runoff where you want it, and then water with whatever you need to add to get it to the same place that you got your runoff to...wherever between 6 or 7 seems to work for me...but the pH could cause the discoloring we are seeing as well as any droopiness I was sure was overwatering...so it could be one or the other or both, and there might even be something else it might be. I hate how under different conditions most deficiencies will show similar symptoms...errrr...makes me crazy sometimes...anyway...the pH is easy to fix, but I really would get some pH down...I used vinegar for a long time with little to no issue, but the pH down is cheap, and lasts forever...and it only takes a little little bit...8 drops if I use the dropper, but really it is like 1/8 tsp...so a little bit goes a long way...you would need even less and it is cheap...super cheap...so I have to vote to ditch the lemon juice...I think it might acutally be less efficient to use...I know the vinegar was...took a lot of vinegar to do the same as 8 drops of the pH Down...blah blah blah...jeez...sorry...its my smoking time...