the leaf is crisping outside to in. We use about 1teaspoon per gallon of water of the Flora Nova, less than the recommended doage, but we are using it for soil. We also see the problem on those plants that have never been fertilized, the babies, as well as those in budding stage receiving Flora Nova bloom. This morning, we measured our clean water at 7pH. We added Cal/Mag (1/4 teaspoon) and Flora Grow and that mix measured 5.4pH. So we added pH Up to get it back up to 7, figuring this may help to correct the soil solution. Until now, we had only been measuring the pH of the water before adding nutrients. Didn't think that would bring down the pH of the soil so much, but we are trying anything at this point. We never read anywhere to measure and adjust the nutrient rich water being fed to the plants, anyone else? BTW, our Northern Light that is budding is showing white pistols again. They had originally turned red, right after coming out, which coincided with the leaf curl. Now the pistols are shooting out white, so we think we might be doing something right.
Make sure you're flusing your plants, at least once a week since you're using the hydro liquid. Without flushing your nutes can build up, and this may be why your PH has dropped. Remember, when flushing use about 3x the volume of your soil. For more info on natural ways to raise your PH, check this link http://www.overgrowforum.com/modules.php?name=growfaq#ph
Yes this is also acceptable. However, you will find that the runoff water can sometimes test a bit different than the actual soil ph. In this case the ph of the soil is the more important reading because after all, that is were your roots and plant eat from. Get your soils ph between 6.3-6.8 and your plants will be fine. Oh and by the way, adding chemical ferts to the water does sometimes make the ph go lower and acidic.
I know this post is old as oil, but peat is considered soilless so Hydro PH applies. The PH was WAY TOO HIGH. Should have been around 5.8. You can see a calcium deficiency along with WAY too much nitrogen. That is classic High PH. Surprises me that no one caught on to this and kept telling the poor guy to RAISE his PH. This was also in 2006 so maybe it wasn't common knowledge back then. Either way, for future reference and people finding this thread looking for help. Peat/Coco/Rockwool and the like are all considered soilless and ph should not be run at soil levels. Hydro PH applies. Peace. Tav