Originally Posted by Scott64a
pH up and down will be found in the pool sections of most stores.
Next time you grow, you can test the soil and amend it before sowing.
FWIW, a lot of strains are more tolerant than others for pH and nutes.
You'll get it sorted... and one day you'll have a list of strains that you love which are a joy to grow. Your experience will grow as well... and I have no doubt that you're gonna do very well.
Please don't use pool products on your plants. They do change pH but are not plant foods.
Plant pH down is phosphoric acid. Plants use phosphorus
Pool pH down Is Muratic acid plants cannot uptake it so it contributes to salt buildup.
Plant pH up is Potassium carbonate. Again plant metabolize the potassium.
Pool pH up is Sodium Bicarbonate. It forms NaOH (sodium hydroxide)
which is toxic to plants.
If you're broke use citric acid and baking soda. Less sodium in the soda.