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Growing in 6" rockwool, 6 weeks into flower in flood and drain. Every day I check pH in rockwool and it is around 5 (pH pen broke, so using drops). I up rez to about 6.5-7 to try and raise pH in rockwool each day. After flood rez is 6 and rockwool is 5.5-6, but the next day it's low in the rockwool again. Any ideas?
TIA,
RedEye
i would try skipping a flood cycle and flood with phed water ,maybe twice . just a idea
You are not using reverse Osmosis water, are you?
Yea, been using it since the begining. And yes, I use Cal-Mag+ as well.Quote:
Originally Posted by Chabnoc
Here's pics of the white widow, which looks the worst.
I tried flushing them a couple of weeks ago, because I thought there might be salts built up in the rockwool, but it didn't seem to help. This is weird, the pH usually goes up.
[attachment=o138295] [attachment=o138296] [attachment=o138297]
any bugs
nutrient strength
No bugs, been looking real good for them under leaves. PPM= 980
my ladies are 11 days in flower at 650 ppm. no signs of def. ph 6.1 may be a little high but they seem to like it
Thanks, this seemed to help. I gave them plain H2O at 6.5 for 2 days and they have ben back on reg. floods and pH is about 6 in rockwool now. All trichs are cloudy now with a couple amber, so I think I'll be starting to flush within the week. WOOHOO, my first hydro grow and my first with anything but bagseed!!! I cut a couple of lower buds last night and smoked them today and WOW. Gonna be some stoney weed in a week. The next cycle I will be more conservative with the nutes.Got a bunch of clones veggin' and ready to go in the bud room. :jointsmile:Quote:
Originally Posted by hows.your.roof
When do you switch to bloom nutes, when you go to 12/12 or a week or so later when they start showing.