I think you may need some CalMag but I'm not sure......I'm not familiar with maxi nutes but RO water usually requires CalMAg.

I'm having alot of trouble thinking you need less nutes.....I think you need more.....300 is VERY low for 2 foot high plants and no Cal Mag.
Weedhound Reviewed by Weedhound on . day 16 flower, nitrogen "claw"? Hydro Growers: 1. Are you growing from seed or clones? seed 2. How old are your plants? flowering 16 days, about 70 days total from seed 3. How tall are your plants? LST'd-- and about 2" tall (with the training) 4. What type of hydro system are you using? recirculating DWC 5. What brand/type of nutrients are you using? general hydroponic's maxigrow and maxibloom 6. What is the Ph of your nutrient solution? Currently about 5.9 7. What is the PPM/EC of your tap water? i use RO water, ppm Rating: 5