Using potassium silicate in your reservoir

Curious about using PS in your reservoir. I run ebb and flow and start with clones. Should I add the potassium silicate right in the beginning when I first put the clones on the table? And then keep adding it until week 6 of flower? This bottle I have of DNF nutes doesn't really give me any feed schedule for the stuff other than add 1/4tsp per litre.

Also I heard it is best to mix it in a bit of warm water then add it to the reservoir first before adding your nutes. Also that it will...

Using potassium silicate in your reservoir