Well everything seems to be doing so good I hate to bring in the bad news. I am just gonna copy and paste from my personal journal
Started with 6.8 Bubbled rain water added 1 tsp of Grow Big and 1 tsp of Big Bloom it brought pH down to 5.8
5.8pH added 1 drop Ph up = 6.1 mixed well and re bubbled for about 3 minutes
6.1pH added 1 drop Ph up = 6.2 mixed well and re bubbled for about 3 minutes
6.2pH added 2 drop Ph up = 6.4 mixed well and re bubbled for about 3 minutes
6.4pH added 1 drop Ph up = 6.5 mixed well and re bubbled for about 3 minutes
6.5pH rinsed syringe in gal jug and it went to 6.6 that is what I watered with. and here is a ugly part
beige pot - in 6.6 out 6.4 = -.2 so soil pH is 6.4 - .2 = 6.2 took 52oz of water to get run off it was dry
pink pot - in 6.6 out 5.1 = -1.5 so soil pH is 5.1 - 1.5= 3.6 took 84oz of water to get run off it was dry
that Pink pot has the bigger plant I can't say better looking only because the beige pot is also doing just as good now. But that pink bucket has had a jacked up pH since the beginning. But I think we agreed to just keep a close eye on it and see what happens.
Started with 6.8 Bubbled rain water added 1 tsp of Grow Big and 1 tsp of Big Bloom it brought pH down to 5.8
5.8pH added 1 drop Ph up = 6.1 mixed well and re bubbled for about 3 minutes
6.1pH added 1 drop Ph up = 6.2 mixed well and re bubbled for about 3 minutes
6.2pH added 2 drop Ph up = 6.4 mixed well and re bubbled for about 3 minutes
6.4pH added 1 drop Ph up = 6.5 mixed well and re bubbled for about 3 minutes
6.5pH rinsed syringe in gal jug and it went to 6.6 that is what I watered with. and here is a ugly part
beige pot - in 6.6 out 6.4 = -.2 so soil pH is 6.4 - .2 = 6.2 took 52oz of water to get run off it was dry
pink pot - in 6.6 out 5.1 = -1.5 so soil pH is 5.1 - 1.5= 3.6 took 84oz of water to get run off it was dry
that Pink pot has the bigger plant I can't say better looking only because the beige pot is also doing just as good now. But that pink bucket has had a jacked up pH since the beginning. But I think we agreed to just keep a close eye on it and see what happens.

Also a little heat stress from new lights so they crisped up a bit, but they are small anyway and won't yield a ton. Still...just goes to show. Anyways. Peace.