Liquid plant food vs. liquid fertilizer

First grow here . My little girls are doing good enough for me. I just started flowering yesterday (changed light pattern and fertilizer). Using FoxFarm products as they are available near me. Was using Instant Grow Big during the veg period. Now im using FoxFarm Tiger Bloom (Blossom Builder) and i also purchased their "Big BLoom" liquid plant food.

Heres the web page! http://www.foxfarmfertilizer.com/products_liqfert1.html
My question is when do i begin using the Big Bloom liquid plant food in addition to my Tiger Bloom fertilizer?
Thanks!
-Happydamage

 

Plant food & fertilizer are different words for the same thing. Nute's (nutrients) is another word that means the same thing as well.

You should continue with veg nutes through the first 3 weeks of 12/12. During this time the plants will more than double in height and they need the extra N of veg nute's.
At the end of 3 weeks, flush the soil then begin with BB and TB.

Use both of them. They're made to be used together.
Don't exceed recommended dosage.

 

Here's what FF recomends
http://www.foxfarmfertilizer.com/SoilSystems_FF_Feed.pdf