I think the 0-8-16 refers to the ml. of grow/micro/bloom.
When I ran the Lucas formula I was getting deficiencies too. Read here that you're suppose to supplement with cal-mag, I think the cal-mag helped, but was was still getting some deficiencies here and there, but I wasn't sure how much cal-mag to use so I was going really light with it. Come time to buy more nutes I just switched instead of trying to dail it in.
Edit-My leaf tips burned running 8/16 and ran 5/10 all the way through too.