joe macclennan
Well-Known Member
Actually I am liking the gro. better than the fol. pro in hydro.
Your new growth looks good whereas your old growth looks like the result of nutrient burn. Keep your mix the same though I'd suggest cutting back the grow for a final ppm of 350 (.5 scale) and I'd also increase your pH to the 5.8 - 6.0 range.
you need to add some kind of cal-mag when using r/o waterI'm currently around 2 weeks into veg. Using ro water bought from store. 7.2 ph@0 ppm. 20 gal Rez. I first add protect at. 2 ml/gal mix then add enough dyna gro to reach 400ppm@.5 scale I believe around 2 to 3 ml/gal. Then ph to 5.5. I am growing in grow rocks 1 gal containers. Flood 4 x day for 15 min. (10min pump on 5min drain) I'm starting to have some deficiencies? Im not too experienced but I believe it might be calcium or magnesium def. would it be due to not using mag pro?
I would disagree with this. I just sent out a few reservoir samples for analysis which were taken on different days and at the end of the week there was plenty of cal and mag left for the plants. I should add that this res had no additional calcium or magnesium outside of what the base nutes supplied.you need to add some kind of cal-mag when using r/o water
Why use any tap water at all? Your water sucks, it's similar to mine which is why I use RO.So no mag pro or cal mag? I will most definitely higher my ph and feed slightly less. 14 gal ro water@0ppm +6 gal tap@340ppm= 20gal @150ppm. Another ? For u pros. Do u add any h2o2 or anything similar to keep Rez clean?
Absolutely. Fix your pH and EC first and report back in a week or two.I did first week all ro water and I felt like the edges of the leaves were curling up and slightly yellow. That's why I thaught it was a magnesium def. switched to 70/30. New growth seemed better. But it looks like those burnt spots on the leaves were spreading to other old fan leaves. Which brings me to here. So dynagro grow has enough magnesium and calcium to run with ro water alone and not see any def?
they look pretty droopy to me. What size are those pots? What kind of medium you using? It kinda looks like some sorta rock but not that I am familiar with.It's been a week now new growth good. But the deficiency is spreading. Slowly. Ph at 5.8@ 350ppm(.5) View attachment 2743982.
After 3 week veg i topped them at node 8 to practice cloning on my homemade ez cloner.
Lik going to give them 2 days to recover and then flip to 12/12. My question is I got the mag pro so no need for mixing water. From now on 19 gal ro water. But at what dosage do I add protect/mag pro/gro/bloom for the first week of flower. Total ppms for the upcoming weeks. No hydrogen peroxide or bleach? Keep floods at 4 x day for 15 min?View attachment 2743987thats before topping
View attachment 2743988That's after topping
View attachment 2744008That's my clones. Any and all info/advise is highly appreciated.