So if you dont remember I started this earlier in soil. But DWC is my fav so this will be my object of affection or awhile

Never done a "tub" before, only buckets, so Im sure there are suttle differences.
Anyone thats in the know can tell me what ya think.
This is day 10 from seedlings.
Anyone know what would make RO water @ 5.8 ph originally, keep rising in ph level?