It actually sounds like your starving them on nutes, thats way to low for coco. 10 ml a&b in ten litres? I use 15 ml A and 15 ml B with calmag in 2.5 litres water and hit 1100 ppm. Your using 3 ml per equivilant water BASE nutes plus ryizo whatever (root?,any micro nutes?) and cannazyme (another root thing). So youve got alot of crap to build roots and no nutes HaHa fucking Haaa. Id say your ppm of base nutes is 100 ppm !!! Plus root stuff. This wont work
id raise the ppm on your base nutes to around 600 for the larger ones and 400 for the smaller ones. You probably dont need all those root things, just stick to the a&b nutes and feed them. Your not using fox farm here. Theres nothing in it to fall back on. Feed them, they cant make roots wupithout food. And get that hydro up to 450 ppm. Nutes...not anything else cept calmag (1 drop per litre). The older ones are probly doing better from the addition of the 45 ml per ten litres of dutch and a&b combined. Id say around 500 ppm of base and dutch combined. Add root stuff and id say 700 ppm or so, am i close?
stop useing the root stuff and start using nutes is what i think. That root crap wont make them grow, nutes will. PM me if you think im on to something or not so much, ive been waiting for a day to see whats up, get back to me