Sub Irrigated Hempy w/ Lucas Formula

Oy, not a great week....topped Barbara about 5 days ago, she was looking much better before then....afterwards it was looking like she was suffering both nute burn and deficiencies at the same time....didnt make any sense until I realized I hadnt checked the runoff in a long time/at all. Sure enough, pH was 5.2 and EC was over 0.2. I flushed a lot but the pH was only rising slowly until i just added about a gram of sodium bicarb, now the runoff is within acceptable range In the meantime, I've halved the lucas formula concentration just to be safe. Added Cronk Monkey Juice cause I'm trying bennies in all my ongoing grows. Got lucky on a coupla Ebay auctions and scored a rand new Mars hydro ts-1000 (150W) for $60