Quote:
Originally Posted by Firsttimer
My ph is a little high. I am in Fox Farm ocean soil. I transplanted about 1 1/2 weeks ago. I am not using nutes till the plants tell me they need it. They are doing well right now. My water is right at 7. My ? is how to use lime to get my ph down in my soil. I asked the guy at the grow shop I go to and he said to just sprinkle some on top of the soil, bud did not say how much. Plants are not looking bad but ph is starting to go up since last week. Plants are almost 1 month old. Thanks.
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Firstly, do not add dolomite lime once the plant has been potted, you need to add it before you pot the plant at a ratio of 1 oz to 1 gallon of soil and make sure you mix it in thoroughly. I say again do not use it once the plant has been potted in the soil.
Secondly, if your soil ph is going up and you're not using nutrient additives then your irrigation water must be the source of raising the ph level in the soil - ph test the irrigation water and if necessary use ph up or down to correct it before you water the plant.
Thirdly, a ph of 7.2 really isn't that much to worry about but you'll need to monitor and check your irrigation water which could well be the source of it. It's worth allowing water to stand for 24 hours so some of the elements it contains can evaporate before watering your plants with it.