At 4 weeks, without amendment to the soil, there usually is a depletion of calcium and/or magnesium when using city tap water. Now is the time for the addition of Calmag, or a similar product into the nute formula. Some people say this is a waste of time in soil. Maybe real "dirt", but using potting soil, it needs help. PH also could be an issue, as it will "lock out" nute intake, especially if it is low (below 6 in soil) You have to stay in the 6.2 - 6.5 range for optimum uptake of your nutes, unless you are organic, then it is self regulating. A flush might not hurt, afterwards, start with a low PPM and build back up to your norm (in soil I would stay at no higher than 700 PPM, for an average plant. I have a Cotton Candy Cane growing now that burns at anything above 650 PPM, but I have other plants that kick ass at 900-1000 PPM in soil.Nitrogen def? I'm using magne cal as the local shop had none of the other. They are in soil and 4 weeks old
Glad to help. 24 hrs on is a waste of energy, 18/6 all the way. When blooming, 11 on/ 13 off until the last 2 weeks, then 4 on/ 20 off.Thanks Jim. I'Ve recalibrated my ph meter and will endeavour to sort this for Monday.
I've also had them on 24/0 but put them on 18/6 to remove any unneeded stress.
Guess it's all a learning curve.
I'm using a hydro mix 60% clay pebbles 40% coco.
Thanks
Biffo
When blooming, 11 on/ 13 off until the last 2 weeks, then 4 on/ 20 off..
I think it's the due to the medium also.Thanks Milovan, I'm under the same impression, I think its been due to the medium and Ph problems.
I just don't understand the 700PPM bit.
Thanks