Fix adbm nutrients

[evadelmas]

Fixes #70.

[codecov]

Codecov Report

Merging #73 into next will decrease coverage by 0.19%.
The diff coverage is 55.55%.

@@           Coverage Diff            @@
##             next     #73     +/-   ##
========================================
- Coverage   84.89%   84.7%   -0.2%     
========================================
  Files          16      16             
  Lines        1013    1020      +7     
========================================
+ Hits          860     864      +4     
- Misses        153     156      +3

Impacted Files	Coverage Δ
src/simulate.jl	85.29% <55.55%> (-7.3%)	⬇️

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[coveralls]

Coverage increased (+0.3%) to 89.05% when pulling 7fa55c1 on fix_ADBM_nutrients into c8b3019 on next.

[coveralls]

Coverage increased (+0.3%) to 89.05% when pulling 7fa55c1 on fix_ADBM_nutrients into c8b3019 on next.