water temp?

Not sure if it makes it stable, but it DOES raise it.
I bought some concentrated PH down, one teaspoon will lower my 18 gl reservoir from a 7 to a 5. UNLESS I make this mistake again. I lower the PH first then added the nutes, my PH went way down, 4.7 so I added baking soda to bring it up. I made this mistake twice now, then I have to add two teaspoon of PF down every day to maintain the PH to around 5.9.
 
great post what is the best water temp for watering my plants in coco???? I have a 100L water butt, just brought a heater and an air pump.

Thanks
 
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