Quote Originally Posted by Daddynobucks
Nice grow,wouldn't have thought CFLs worked that
well :thumbsup:,my bad.

In the first photo on day 67 post what is going on with the edges of the leaves? Do you know? I have the same thing but much earlier in the flower cycle like the first week of flower.

I sure wish I new what is the cause?

Daddy

seems its always something with hydro
There is a 400 watt HPS above the cfl. hahaha I think that is why the cfl is working so nice.

I am not sure about the leaves. I grow in rockwool and I started watering my plant once a day. The pH of my res was low, 5.0-6.0 (I use the liquid test, orange-yellow) It did not drift much and all was well. I read the paper I have in my sig on pH management. After doing so I started testing samples straight from the rockwool and it was high. Like 6.5-7.0!!!! I came to a conclution that I should water more than once a day. Now I do it twice. I do not want to water more than that unless I change mediums. It has helped a bit at stabalizing the pH of the rockwool. It is now around 6.0-6.5, It goes up the longer I do not water it.
Every grow I have ever done my leaves start loosing it around day 60. Except a sativa (Trainwreck) the leaves did not start loosing it till around day 75. I do not know. It seems like a fight for me to harvest things later in the window. I need advice on this one too. At least advice on how to help stabalize the pH of rockwool. I gave it a pre soak but mabey it was not enough.
Even with watering twice a day with a pH low like 5.0 the rockwool stays high. I need help too.
I think it was pH related. I also did some experimenting this grow trying to get my ratio of cal-mag to bloom nutes. So that might have been off as well.
I also fed on the lower side. The highest my EC went was around 1.8, that was good though, when I went any higher the ec would rise. When I went lower it would drop. When my medium got to aound 2.0 I would flush. This was not a problem. Ph was my problem and getting the cal-mag to bloom ratio down.
Suggestions anyone?

edit: I think the pH problem was related to too much cal-mag, This was being left in the rockwool making the pH rise. I am not sure.
demoreal Reviewed by demoreal on . Purple Diesel Medical Grow 2x2 ebb and flow hydro unit 400 watt light 8 plants Rating: 5