Yes.What is your rationale behind not trying higher ALK? Due to dosing and holding that #?
My ipinion:
For a new reefer stability is the key. Once you see you are getting growth and not watching your SPS frags wither away you can play the "higher alk = more growth" game. Higher alk = usually means more of every other element. With higher alk comes the chance something will go awry and you get an alk spike either + or - and you will see your SPS start to go down hill.
Think race car motor. The more you modify it for power the more you need to change other components to match the new output. Hopefully the motor does not blow up in the process.
5am.... hope this makes sense