is there another part.. that you have that could make it more balanced?
it sounds like your only feeding half the formula?? wheres the p and K
Red can be from Mag deficiency. Try giving them a tiny bit of Epsom salts or Cal Mag.
If it is a sativa strain it could be genetic.
The 3-0-0 is a add on but the other is just basic soil nutes im gonna switch to fox farms trio or wat do u think best nutes are for soil its 5 days into flowering and is it ok to switch even tho ive been using same nutes its whole life