i presume the pith is those huge chunks i see in top of folks buckets and such, just a guess, so if you have coco and perlite only additive you need is a good nutrient program because your looking at twice a day in veg and maybe 3 times a day in flower or more actually ,coco is coco and you dont ever let it dry,thats reasoning behind using it, you feed more you get more production,but you can burn um up if you dont watch what your doing.
that said i used humbolt secret A&B with the golden tree in my coco and it works great, i also run the 3 gal pots ,so it did very well under a 400 HID light in a 2x4x5 tent,i dont use them air bags at all so my 3 gal pots in flower i feed twice a day to runoff,runoff no matter what might say is maintence while you feed, runoff is washing out left over salts from last feed,so flush um is my moto, by doing so you dont have the worry later when you really dont trouble

Well I was wondering more like adding lime or worm casting or whatever to amend the soil and reduce on feeding ratios or help NPK stuff or whatever, kind of a test thing.
not 100% sure we’re your going with your response….

you would have better luck using worm juice to feed with, i dont think lime would help you at all,you gotta understand that those things will leach out of your media,the worm juice would feed as soon as you apply it , but to hold in there i doubt ,but your set on trying and that is how we as humans discover stuff.
so you sound offended of my response so im moving,tried to help all good

Lol alright oh and fyi you never flush coco you just do reduce feeding to bring the ppm and ph back to were needed.