Too bright? or is it ok? “visual”

Plants are definitely not light burned. You're running a 300w strip light in 1m x 1m tent, which is very much on the low side, so too much light is not gonna be a problem you'll encounter :) You have to balance between light proximity to the canopy and having the light cover the entire area - You want the light as close as possible while it's still placed high enough that the corners are getting decent light too. FYI the net you're using is pretty much just in the way, you trained the plants very well and they don't need it - and if you remove it, you can turn your plants 90° every 2-3 days and have all parts of the plants recieve an even amount of light throughout the grow. With that light you can easily have the lights 20-25cm above the plants but then the corners won't get much light, try to find the sweet spot :) Given the size of the light and tent, my guesstimate would be 40cm above canopy. You can check light intensity with a piece of white paper or the palm of your hand keeping it at canopy level and compare light reflection levels in different areas of your tent, this is a good way to see if the sides and corners are getting a decent amount of light.

Check the PPFD at top of plants. If you need to adjust for stage of growth you're in, either adjust light intensity, light height or both. You might be surprised what the lights tell you. somewhere between 750 and 1,000 µMoles/m2/s (PPFD) is okay for flower. To me PPFD measurements are all you need. Every now and then check to see if you're still on target. You'll have to make adjustments for growth. You don't need a meter with all the bells and whistles. Full spectrum is a choice if that's what you have, able to calibrate and takes batteries.

you should work this out in vege while it is growing. light meters and apps can get you in a good starting spot, but you alway shave to fine-tune based on the plant's growth pattern. too tight needs less and too lanky needs more. Simple as that. It will be proportional to hours of operation. So, if you work it out for 18 hours of vege light, you know you can keep same hanging distance with 150% power over 12 hours. So, you should be shooting for somerhing that works well over 18hours and 67% power or less, unless growing autoflowers, which just continues operating 18hours a day. temperature, RH% and atmospheric co2 will all impact how much light a plant can take per day without damaging itself.

Q: why did you do it? what was the reasoning to incresse to 100% from w/e it was at? In basic terms to much light can stunt them and cause more compact growth. If you notice the space between the nodes is to tight. its likely to close to the light or the light is to strong. If the light is not strong enough they stretch to much and become floppy and weak. However some strains will stretch more or be more compact regardless of the light. Best to use a DLI approach. Google it if your unfamiliar. you can calculate your ballpark DLI from PPFD maps by the lights manufacturer if they posted them. but the best way is by using a quantum par sensor. They are not cheap but some places rent them. My grow shop let me borrow theirs and it was nice. the photone app is not a quantum par sensor and its just doing a bunch of conversions to get its numbers. Its not a bad app when calibrated, in fact its brilliant. but to calibrate it. you need a quantum par sensor so its a bit of a bitch. You can use it uncalibrated and make note of the PPFD the plants seem to like using the above methods. then note your PPFD is XXX on the app, just realize that's not a measurement of accuracy but it will work in your context as the app is consistent when used with a standard white paper filter over the lens. So it wrong, but its always the right ammount of wrong.

Looks fine.

Your light manufacturer probably has a ppfd map for your light, download Photone app as someone already suggested, check your ppfd with the app compared to what the light manufacturer says and calibrate app if needed. You should be aiming for 30-40 Dli.

download the photone app on your phone. its free and you can check the par/ppfd and the DLI (daily lighting integral) and this will help you know whether or not your giving the plants enough

The stage the plants are at right now they should be able a lot of light. As long as your lights aren’t 12in from the plants you’re probably good. I super suggest like your really need a par meter to be able to grow weed really well. Don’t get a lux meter they don’t measure the same thing

If you can provide some details about the light such as make, model, wattage, how far from the canopy, I could probably give you an idea of how good/bad the distance is. It would be very hard to tell from the picture other than obvious light stress which I don't see such as bleaching, yellowing, etc.