bush master gravity and snow storm

so i recently decided to play around with bushmaster gravity and snow storm. when i was reading the directions for snow storm i noticed it said that if you are using it with bush master or gravity to use plain tap water no nutrients. so my question is are they saying no nutes at all or dont add nutes with the same feeding as them? does any one have any experience with these products? how do you use them and with what? any advice would be greatly appreciated

I use both with killer results. I never stopped with my nutes, but I did reduce them in half for the first few feedings. After that, i went full strength. Really liking these products!

Peace!