You should be dosing 1 drop of bio not 1ml
If Dougs test comes out the same on the nitrate then adjust as follows
Bio 2 drops every 3 days
Bak 4ml a day
watch closely, if your corals start to go too bright cut the bio down to 1 drop and the bak to 3ml
This is now a balancing act we need to find you maintenance dose so please check daily now your nitrate and watch the tank closely.
My guess is your permenant dose will be 1 drop of bio and 4ml of bak but we shall see.