Can anyone help got a few questions when growing d...

Follow the instructions on the container. Some cut the amount in half and adjust depending on the plant. they are all different.

you do what the plant demands... so if grow is not sufficeint and lackign on some nutes , even in vege, it's better not to go into it with preconceived notions. in my exp, the plant can handle just as much p/k in vege as it does in bloom. the only thing i see change in bloom is a slightly lower need for N. as far as when to use a "bloom" forumulat.. you want to use it before you see the bloom growth.. otherwise it's 'late' ... but like i said, in my expereince you should already be feeding p/k at upper thresholds and going higher will only cause burn. if it doesn't, you could have feed more previously. observe and react to plant. it is something oyu have to learn as you go... too many variables make each garden a bit different and 2x with soil. take some notes on what you did and timing... consider the results, and adjust next time... you'll have it down by 2nd or third grow if you don't waffle too much.

Grow goes first grow=veg, bloom = flower then you can mix gradually switching to acclimate the plant to new input

Ezzjaybruh is exactly right. Grow first - this contains higher nitrogen, needed for vegging. Bloom later - this is for flowering and contains the phosphorus and potassium the plants need. I also add small doses of Cal-Mag through my grow, rhizotonic during veg for healthy roots, and use a PK booster in the first 1-2 weeks of flower. These last three are technically optional but are recommended.

I'm definitely with Ezzjaybruh on this one... your Grow during veg, I like to add the Bloom during pre-flower along with a dose (only once a week) of calmag from pre-flower to harvest. At about week 2 of flower, I'll add the PK booster... flowers don't need calcium to get bigger, the plant needs this nutrient to build a healthy root system and it also helps the plant take up other nutrients.... what flowers need to grow big and dense is P and K.... Good luck!

Use your pK booster fairly well during the first few weeks of flower and stretch. Reduce your nitrogen about week 5 and eliminate all nitrogen sources a few weeks before harvest. Your plants want calcium more than anything else, make sure you use it every water at full strength for most of veg and bloom.

Usually it’s grow A&B before flower (vegetative growth) and the bloom A&B once flowering begins. Usually it’s one or the other. Some ppl use both during the transition into flower