BRIGHT GREEN NEW GROWTH?? HELP PLZ

Hi, I am currently experiencing the same issue with bright green/yellowish new growth..my current setup is : 10 plants in 18litres pots in soil under 1x gavita (set to 750) & 1x 600 has. Have been feeding with mills a&b, cal/mag, flower burst (just started flower) & silicone additive.. ph has been around 6.4-6.7 e.c for last feed was 1.2 lights on temp range from 77-81 lights off go down to about 65-63 really appreciate any advice thanks

the first thought is to just feed a little more. that very well could just be the results of rapid growth and slight under feeding. if you up your feed by about 20% and the problem persists, then it may be a deficiency, or less likely, a lockout caused by too much of another nutrient.
up your feed, wait a week, if it doesn't seem to be clearing up, take some pics under regular light and let us know

Yeah my first thought was rapid growth, haven't had it before but am running new strains so thought best to get an opinion I'll kick the feeding up a touch and get back in a weeks with better photos...Cheers for the fast reply dude