When to dose for nutrients

[mossanimal]

My 90 gallon tank is around 5 and a half months and is lightly stocked with 2 clownfish, some mushrooms, zoas, a BTA, some GSP, and Cyphastrea. All are basically just frags at this point. I have a sump with protein skimmer and macro algae fuge (Gracilaria). My nutrients are bottomed out to zero and haven’t seen much for coral growth yet. At what point should I consider something like Reef Roids or a similar product? I do dose phyto every day.

 

[Spare time]

If you have 0.00 nitrate and phosphate, then feed the corals. This is how it works in the ocean.