twisted growth

Just curious as to what the problem can be, any insight would be appreciated. using 1000 watt MH bulb for veg. Plants are showing twisted growth on one strain. Its not normal for it. Nutes are on point. Using slightly less to avoid burn and using micronutrients also. no heat issues, room ranges from mid to high 70's. im using a drip system in hydroton. good circulation water temps and PH. I'm thinking it could be an overload of micro's or possibly a boron or zinc deficiency. Im using the exact same system on an other strain and its turning out proper but they don't share the same rez. so that's why I'm thinking it could be too much micros for the size of the plant. I'm stumped. feeding schedule 4 times a day spread five hrs apart for 10 mins. n e insight would be great. thx