...sounds like you maybe overwatering, if you need to water your plants twice per day, your either in a very small pot (too small) or your overwatering them....you should only need to water once every couple days in normal conditions.
...also, you may have been fine if you would've gave your FFOF water only....when you added the salts, you killed off the microherd that makes the FFOF 'high quility'....you can simply transplant into a slightly larger pot every 3-4 weeks with FFOF, and your plants will only need water...your finished product will be able to compete with the world's best with the right strains and a proper dry/cure.
...don't buy into all the snake oils....you had all you needed when you bought the soil.