SF1000 Distance/Dimmer help (60x60x180)

You don't have light burn, only slight nute burn and/or minor pH imbalance You need to add more light to avoid leggy plants and to level up your output In veg light burn is the same as heat burn, in flower it's bleaching in the flowers.

The exact distance and power depends on local variables. So, what you need will be slightly different than the next person. Temp, RH and ambient co2 in the air all impact how much photosynthesis potentially can occur per day. So, you may see seaosnal differences in how much light will cause damage -- it may not always be the same. The math is not a one-size-fits-all. It only gets you in a ballpark and you have to observe and adjust to fine-tune it. This is how you adjust relative to local variables. The node spacing of new growth is your best guide for this... too tight, needs less.. too stretched, needs more. Simple as that. Unless a light is poorly sized for a tent or you are trying to cover a much smaller space early on with low power / short distance from seedlings, the distance should be about coverage... how strong is it in the corners vs the center and what's the overall average are the most important things, normally. That's just about geometry and a simple lux meter or app can help determine proportional intensity measured at various points compared to the centra reading. That will help you choose the best height. Reflective walls help, of course. 249.21umol/S PAR is the max output. 12 hours needs -- this is the greatest need so i start here. Solving for X to get max area of coverage 249.21 PPF / 900 PPFD = 0.28 m^2 This is 3 sq ft. Shape of the light will impact footprint of coverage, so some common sense needs to be applied. Since it's inversely proportional to hours of operation (all other factors remaining the same) and maintaining best hanging distance for best coverage, we can do simple math to convert this to any hours of operation. 18 hours needs 2/3rds of the power compared to 12 hours. So 67% power is all you need. Or for autoflowers, you can run at 100% over 18 hours and cover 50% more area, or about 0.42m2 which is 4.5 ft^2. This is all based on ~39 DLI, so it my overshoot a few percent in most contexts... if you have a little extra co2 in the air and maintain a more conducive climate, you may be able to go higher... the growth pattern will tell you what's up in this regard.. If you try to focus on this footprint based upon PPF of the SF-1000, the math will play out very accurately, but still need some adjustment due to local variables. Quantum boards are usually better off with a little extra hanging distance, because diode distribution is not s spread out as other frame options... 18-20" will help it cover the entire area. Like i said, in early vege you can drop power way down, get the light nice and close and save some watts trying to cover a much smaller area, but that'll take some trial and error with a bit more guesswork on "PPFD" resulting... e.g. with seedlings in a 1020 tray i get my 150w light about half the normal distance and 20% power. There are so many moving factors from shifting area of coverage, to distance and even stage of life as seedlings don't want as much light as a more mature plant, but the same cause and effect plays out... watch new node growth and the spacing.. it will tell you when providing too much or too little.

salut Voici mes réglages recommandés pour ta Spider Farmer SF1000 : ​Guide de réglage (Distance et Intensité) : ​Stade Semis (Seedling) : ​Distance : 60 à 75 cm ​Variateur (Dimmer) : 20% à 30% ​Objectif : Éviter que la petite tige ne brûle tout en empêchant qu'elle ne s'étire trop. ​Stade Croissance (Veg) : ​Distance : 45 à 60 cm ​Variateur (Dimmer) : 40% à 60% ​Objectif : Favoriser des nœuds serrés et une structure robuste. ​Stade Floraison (Bloom) : ​Distance : 45 cm a 60 cm ​Variateur (Dimmer) : 80% à 100% ​Objectif : Envoyer le maximum d'énergie pour la production de résine et la densité des têtes. ​Mes 3 conseils de sécurité : ​La règle du "molo" : Ne change jamais les deux paramètres (hauteur et puissance) d'un coup. Si tu baisses la lampe, garde le même pourcentage pendant 24h pour voir comment la canopée réagit. ​L'observation des feuilles : Si tu vois les feuilles du sommet se recroqueviller vers le haut (comme si elles priaient) ou décolorer (jaune/blanc sur les pointes alors que le bas est vert), c'est qu'elles ont trop de lumière. Remonte la lampe de 5 cm. ​Le test de la main : Place le dos de ta main juste au-dessus de tes plantes. Si au bout de 30 secondes tu ressens une chaleur qui "pique" un peu, c'est trop proche. La LED brûle par son intensité lumineuse autant que par sa chaleur. ​En résumé : Pour éviter les brûlures, la SF1000 demande de la progressivité. Mieux vaut être un peu trop haut que trop bas au début de chaque phase. il y a aussi une application sympas gratuit sur le store du tel c'est PPFD METER . il est gratuit et tu peux gérer le flux lumineux au mieux . j'espère que j'ai pu t'aider. bonne soirée et bonne culture

Hi BunnyBud, get yourself a PPFD meter or at least a similar app to check the PPFD with your phone camera and some paper, and follow the steps that the colleagues have already mentioned.

Hey BunnyBud, I’m sure you already know this based on your profile and experience, but I’m happy to help. In general, it depends on which stage your plant is in and how much light intensity it needs: * Seedling: 100–300 PPFD (Photosynthetic Photon Flux Density) * Vegetative Phase: 400–600 PPFD * Flowering: 600–1000 PPFD Anything above 1000 PPFD should be handled with caution, as you’d typically need to add CO2 at that point – which is something I’ve never done myself. Regarding distance, Spider Farmer recommends the following settings for your light: * Seedlings: 60 cm at 25–40% power * Vegetative Phase: 45–60 cm at 60–80% power * Flowering: 35–45 cm at 100% power So, just check your lamp's distance and power level according to your current growth stage. I hope this helps, and good luck with your grow!

ITS NOT DAT SIMPLE THINGS LIKE ENVIRONMENT PLAY A HUGE ROLL!!! DER ARE MANY OTHER THINGS ALSO!!! LIKE IF YOU HAVE BAD WATERING PRACTICES YOU CAN STUNT YOUR PLANTS EVEN IF YOU HAVE DA LIGHT AT DAT SWEET SPOT!!!!! DER WILL BE RANGES FOR DA LIGHT FOR EVERY ENVIRONMENT!!! SO DER IS NO EXACT DISTANCE OR DIMMER % !!!!