do i need to add ant extra lime or any other amendments. as i only going to use it for flowering thes plants that turn out to be female in 3 gallon pots. i will flower when they are small. i haven't chosen my light yet .ether a 400 hps or a 250 watt. in a small cabinet.
Mix 1 bag of light warrier with 1 bag of OF. Mix in some more perlite. Im using this mix now.. Never had any Gnat issues with FF. I did get them from HOME DEPOT SOIL.
The Only issue people seem to have with FFOF is that it is a little too hot for seedlings and freshly rooted clones.
i was thinking of cutting it with coco coir. i started to use coco in my last grow i did 2 years ago and found it to be the best mix. i use to mix my own soil it was called vics super soil peat based .so i added coco and it gave me the same growth rate of some hydo grows but with soil.