What PPM during transition?

10 gallon pot
Fox farm ocean forrest soil
Famurs 3000 w led
Botanical nutrients pure blend pro bloom soil
Feed feed water schedule
2nd week of flower
OK I'm reading runoff at 246ppm. Do I add 600ppm more next feeding or do I need another 800ppm? Each time I read the runoff it seems the plant has eaten 3-400ppm per day. Should I just give it 400ppms per day then increase slowly or ? Please help.
 
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