Quote:
Originally Posted by babygro
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.
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from what i understand organic ferts from foxfarm dont lower the ph. water could be really basey for sure. and u can add lime to soil with a living plant u just have to be careful--u have to add a spoon of lime to a gallon of water, then let it sit for a while to cool down--the water will get really warm . once it cools down just water your plants for like a week or do alternating waterings until the ph is back to balance