1st time using FloraSeries in coco - need advice

So after my last grow I decided to switch to the GH FloraSeries nutrient line and had a few questions for anyone that has experience using it in a coco based medium.

My medium is Royal Gold Tupur (3 gal fabric pots) and my light is a 250watt red-spec LED from BudgetLED in a 2x4 tent with 2 plants.
Temps: 70-77°F
Humidity: 50-70%

These are what I have:
GH FloraMicro 5-0-1

GH FloraGro 2-1-6

GH FloraBloom 0-5-4

Cutting Edge Solutions Calmag Amplified 2-0-0 (subbed for Calimagic)

Stout Mono-Silicic Acid (subbed for Armor Si)

Floralicious Plus 2 - 0.8 - 0.02

I use RO water only.

At first I started the plants (first couple of days) on what cocoforcannabis website recommended for seedlings which was..
5ml/gal CalMag
1.25ml/gal FloraMicro
0.6ml/gal FloraGro
0.6ml/gal FloraBloom
diluted to 0.4EC, 275ppm, 6.2pH


Then I upped it to this...
5ml/gal CalMag
2ml/gal Micro
1ml/gal Gro
1ml/gal Bloom
0.7EC, 500ppm, 6.1pH

and for the last week it so I’ve gone with 1/2 dose of what the GH feedcharts recommend for early growth as well as went and got the stout msa and Floralicious plus..
5ml/gal CalMag
2ml/gal Micro
2.5ml/gal Gro
0.5ml/gal Bloom
1ml/gal Stout MSA
1ml/gal Floralicious Plus
0.75EC, 500-550ppm, 5.8-6.0pH

I have begun to see some deficiency signs (probably magnesium) and some drooping leaves as well.
My last runoff measurements were 6.08 ph, 0.69 EC and 460ppm.

Here are some pics from today..

Zkittlez Auto



GelatOG Auto


So far I’ve only watered once a day to runoff (around 1/4 gal each maybe) and today I started to water twice daily. Also for the past few days I’ve done foliar sprays with Epsom salt at a ratio of 1/2 tsp in 1/4 gallon RO water thinking that may be my problem.

This is also the first time I’ve attempted an automatic drip feed setup with a reservoir as well. I’ve hand watered about every 3rd day as well to make sure everything gets saturated and there are no parts that have salt build up.

Am I doing anything incorrectly? I want to make sure I’m getting the proper ratios of nutrients and it’s taking a bit for me to get the hang of it it seems.

Starting to see these yellowish blotches as well.

Here’s a pic of new growth.

I used to run GH in coco. I always ran it at full strength. In a 50 gallon resevoir it was 3 cups green, 2 cups brown, 1 cup pink, and 1/2cup cal/mag, 50ml floralicious plus. This gave me around 1200ppm. I still use this for my vegging plants and switch to H&G for flowering.
Also be careful, despite what some people will say, its very possible to overwater coco, especially in younger/smaller plants. You will get drooping leaves that will become discolored. I would back off the watering to once per day unless your plants look like they arent getting enough water.