Autoflower Grow 1

Hey there. So, I tried answering this earlier but I was banned. So here's round 2. I've invested heavy into co2. And when delving into that. You really don't wanna go cheap pal. As I suspect. That you just don't wanna know your levels but are looking to enhance them. Well, say you get a meter and it reads 1500ppm and it's over 5000 cause your plants are locked out of photosynthesis (which if you don't have the right environment extra co2 beyond ambient level will just increase and increase and be deadly in the environment. Co2 stays low to the ground so, any pets small kids and so on, are the 1st to come into contact. So, I would highly suggest you spend more or close to 200e on a well known brand. So many reviews I seen on amazon with meters giving much lower reading that what was really there. My pro leaf. Its one of the best on the market that doesn't cost as much as the Eco / growtech but just as good. If not better you'll find they all use parts of the same reg vivoson. It'll set u back 290e can go up to 500$ on some sites. You'll get a fuzzy logic controller that reads co2 by the second. And is as safe as they come. If there's a fault. It turns off.

Looks like Septoria. Clip it and spray a copper foliar spray just in case. Dont want it spreading and you can avoid future issues at the cost of and one fan leaf...

depending on size and frequency this may or may not be an option for your context.. i find topping off at at half capacity or more in my rez allows me to delay cleaning a bit longer than letting it go down to 10 gallons or so and refilling (55 gal drum). I refill at 25gal. the rez is in a different room which is cooler than grow area. the heat from powerheads that stir the water have less impact on a larger volume and i add 30-35 gallons of winter tap water that is fairly cold every 3-4 days at peak use. the key is the temperature. if it's warmer you will have to clean more often. also, can adjust the volume you use and just refill more frequently with fresh water. have a volume that lasts 4-5 days instead of a week. if you can't avoid it, then work around it. adding h2o2 to the res will definitely help. not sure how much and how often, but it breaksdown fairly fast and faster in 'hard' water which is what fertilized water would be considered.