Any suggestions

I'm going to start my next grow soon and am going to use 40/40 coco loco and happy frog with 20% perlite .I am going to grow one blue mammoth one gorilla glue and a Northern lights all autos from different breakers barneys,fast buds,nirvana .Should I add anything to the soil before I get started.. Any suggestions would be greatly appreciated????

What nutes will you feed with? Ffof will run out of juice around 5-6 weeks, hf has less, i think. Consistent watering will be important with a light mix.

They say it is triple washed, I would assume there is still lots of salt in.
Best you can do is to buffer it with calmag (50g to every 20 liters of water).
This drives off excess Na and P. Preventing the coir from sucking up the nutes faster than the plants and getting rid of excess salt.

I am going to be using fox farms trio ... I was wanting something that would let them breath better my last grow had very little perlite and it killed me in flower ... so this go around I want drainage and a good water flow.. I switched to dirt pots also to help with that also....