My plants are gettting an odd appearance the leaves are getting alot of yellow spots all over the plant can anyone help this is my first crop in around ten years

The leaves of my girl in bloom are getting yellow on them and dying mostly on the lower branches the top and middle of the plant look great


E- Indoor
E-Soil
E-specific medium Not sure what this means....
CSL-Soil type/brand Black Gold .13-.5-.10
HCL-Hydro/aero/soilless system type
SCL-Miracle Grow during vegatative stage and Tiger Bloom during Flowering
SCLR-Soil or slab runoff pH (Unknown)
E-Water source Well
E-Source water pH 7.4
HRT-Source water EC (if hydro)
E-2 months vegatative and 3 1/2 weeks in Flowering stage
E-Tiger Bloom
E-4 Tbs per gallon of water
E-1000W High Pressure Sodium
E-Air temperature (both day and night if you are running a dark period) day 70-80 night 60 to 65
HD-Reservoir temperature
E-Air % Relative humidity Humidity 60 to 70%
E-Lighting schedule 12 on 12 off
E-Type of ventilation your room has 8 inch exhaust fan and an oscillating fan
TR-Did you pre-soak your media in pH corrected solution? No

I hope I have done this correctly enough for you all to Help me. For now I have backed off on the water some and stopped the use of Nutrients....Please advise...By the way love this Forum

Just a question first, why were you mixing 4 tbs of Tiger Bloom per gallon of water? The directions say 2 teaspoons per gallon of water which is 6 times less than what you were feeding them with. What was the ph of your water after you added that much Tiger Bloom to it? Was it between 6.2 and 6.5? You may have dropped the ph below 6.2 by adding so much Tiger Bloom.

thanks I am new to this and learning by mistakes it seems... I will pay much closer attention to the PH. thanks for the reply