hydroponics beginner need help asap

[startotrill]

Strain Platinum buba kush ,afghani
Indica,
How Many Plants 2
Vegetative stage
If in Vegetative Stage... How Long 3 weeks
Indoor
Hydro
Reservoir size 5 gallon bucket
If Hydro, Reservoir Temperature?
Medium? Rocks from homedepot
If Hydro, what type of Setup? Dwc
Lights 4 t8 CFl tubes
Temperature of Room/Cabinet?80
RH of Room/Cabinet?60
PH of Medium or Reservoir?5.8
Any Pests?no
Fertilizers used?montys 4-15-12

My problem is my bottom leaves are yellowing I was
Using montys at first but I'm switching to
Mg all purpose plant food 24-8-16 for now any help
Would be great

 

[vastok]

you are in veg...? and using this: montys 4-15-12... better with something like 12-6-6 is a value of 12 for (N) and 6(P) and 6(K) you need something high in (N) for veg growth, and starting of consider nothing above 400ppm's, right now flush and circulate until you get that nute replaced.
I'm switching to Mg all purpose plant food 24-8-16 for now any help.
(Mg) is best used on plants older than 3 months or nute abused plants, yours seem young for this, consider using something for hops or tomatoes, even correct vegetative hydroponic nute is good,

 

[rillos]

What line of nutes are you using. Is it designed for hydro and what is your PH. 5.8-6.3 with trying to keep it close to 5.8 is perfect.

 

[startotrill]

you are in veg...? and using this: montys 4-15-12... better with something like 12-6-6 is a value of 12 for (N) and 6(P) and 6(K) you need something high in (N) for veg growth, and starting of consider nothing above 400ppm's, right now flush and circulate until you get that nute replaced.
I'm switching to Mg all purpose plant food 24-8-16 for now any help.
(Mg) is best used on plants older than 3 months or nute abused plants, yours seem young for this, consider using something for hops or tomatoes, even correct vegetative hydroponic nute is good,

Thanks for the help I will change some things around