I’m in week 3 of auto flower. I feel like I’ve gone pretty light on the nutes, but maybe I overdid it with Big Boom. I tried using it on every water session this grow. In the past, I’ve used it every other water session. I already went ahead and flushed with about 10 gal of water, but I wanted to see what you guys thought.
1 Like
Looks like a calcium deficiency have you given her any cal-mag?
2 Likes
No I depend on my hard water for calcium and magnesium. It has always been adequate in the past. On my first grow, I used RO water and got calcium deficiency, I was able to fix it by using my tap water. Maybe the city has decreased it.
Ph ppm of water with Nutes going in? You have any run off # from when you flushed ? Looks like cal mag but you might have other things going on as well. What kind of soil ? 3 weeks flower ? 3 weeks from sprout ?
Going to need runoff numbers. You can’t burn your plants with big bloom unless you dump the whole bottle in your soil without diluting it.
1 Like
Runoff pH was 6.5. I fed with 0.5tsp of Tiger Bloom and 2Tbsp Big Bloom in a gallon about 9 days ago. I’ve watered once since then, and I skipped the Big Bloom because I started noticing the spots.
Upon further inspection, I think my pH probe is bad. It is not calibrating correctly with the buffers.
1 Like
Well while not a good thing, it’s good that you detected it and can replace
Depending on your pot size, I would say at that stage of the plants life it will be drinking more than a gallon of water every 9 days, more like every 2 to 5 days. Have you felt the weight of the pot to see how light it is lately(before flush)? Also since you just flushed it I would definitely give it a feed and some calmag and test your run off numbers.
1 Like
Yeah I watered once between today and the last 9 days, I just didn’t give any nutes during that water.
1 Like
If you are watering and not feeding you definitely need to add some calmag to your water and make sure you are adjusting the PH
