I don't know about white walls and all that. If you want to maximize growth you need to have your grow area (volumn per cubic ft length & width & height) filled with canopee 18-24 inches from the light in seedling stage before u go to veg. That means, while you are in a solo cup, your plants have to be 3x the width of the cup before you go into a 1 gallon bucket for veg. You achieve this by giving each plant 25watts minimum at a ppfd of 100 umol/s for 7 days, 200 ppfd for 7 days and 300 ppfd until your seedlings are 3x wider than the solo cup. This is filling up the space with canopee. I shouldn't be able to look through your canopee and see the backs of the wall or look down from the lights and see the floor or soil anywhere in the grow space if so, then you have not filled out your canopee. Filling out your canopee requires you to grow your plants wide and not vertical. Once your plants have reached they 4th node on the apical chute you top the apical node (never fem) and lolipp the lower first node leave only 2 nodes. This will stop the apical growth vertical and start the branching width. The 2 nodes left will grow 4 branches then once they have branched maturity you fem (not top) then those 4 nodes will have 8 nodes then you fem again (not top) then you will have 16 tops before your seedlings is even 30 days old. Now your plant has 16 tops, it will be wider than the bucket, it will hsve filled out its MAX volumn of canopee for its space and will now be ready for Veg (each plant gets sane treatment). If you don't feel out the canopee during seedling stage under your T5s or LEDs u end up with plants that never filled out its canopee because it never got wider than the bucket so u put in 1 gallon bucket with no branches it gets overwatered and grows vertical and never branches the roots die from overwatered u get mag deficiencies etc. You must fill out all the canopee during seedling stage before you ever move to veg or u will never fill it out later because the plant matures in veg, it will never branch and u get those tall apical chutes that run into the light and popcorn buds at the bottom before it never got light as lights can only penetrate 18-24 inches past the apical top so nothing less will 25" will ever develop branch its to late u will have plants tall and skinny with no branches and 70% missed yield overwatered and since u missed 70% of canopee u had more light hitting the floor and soil then light hitting the plant meaning to much light
Bullshit seedlings have no canapee that's because you don't know what your doing and I can tell by your statement u are a plant killer because all my growers have full canopee (16 tops before the plants 30th day before they move to veg. During veg they turn 16 tops into like 100 so don't tell me seedlings don't branch or develop canopee just say u don't know how. See, your correct statement should have been teach me how instead of saying seedlings don't get canopee, Plants are all canopee. 99% of growers don't know what they doing so when they loose they think they winning. You see mostly failed grows so u have become a custom to failed grows. I don't want to insult u I apologize not my intentions. Here let's do this, if u want to achieve a full canapee with 16 tops while your in seedling stage here's my email and from a Engineering perspective as I am a Biosystems Engineer this is all I do. Emaile me I'll tell you why, how, when and where then u go start winning so u can shit on your friends. The moment someone comes to me about nutrients and lights then I already know they are nutrient and light salesman and failed growers. Good growers know yield is based on maximizing canopee from usable light Photons and quality is based on grower talent. Its never about nutrients, pH, vpd or any of that bullcrap yall talk about ever, if u talking about vpd your a plant killer because only people who give to many nutrients burn they plant talk about oh my vpd isn't right. Nooo, your a shitty grower who was taught by another shitty grower.