I didn't check my run-off as I'm bottom feeding with my Autopot system.
to check run off in aquatray.............. when they are dried right out after the res runs out........... hand water a half dose nute feed, Ph'ed to to 6............. trickle water in till you get run off in the dry aquatrat, suck out 100-150mls.......... take Ph............would grab a 100ml syringe and pump out 100ml from the Ph run off test............... i would imagine your Ph is well low ........................ grab some run off test Ph............. get you root temp up to 22-23c........................... post your run off''s here........................ we will have to prescribe a shift in Ph i bet you 10 bucks !!!!......................... that yellow is phos deff.................... i would put my horses on it !!! ALR
BTW, do you have a grow log somewhere?
am just about to post up the last gasp to harvest of my Dutch dames Daquiri lime think diffewrent and the mental 'DesFran"................... all automatics, the first auto's i have done in 4yr, as i do fems for yeild reasons !!! as a rule.................... but the auto's are as big as fems noe !!!!!!!!!!!!!!!!! will drop you a link when i get round to opeing a harvest thread ok..................... ALR