So I just watered my girls with 6.5 pH RO water only 2 cups each since they are little babies. I mixed pH down in a 5 gallon water jug so I still have a lot left over. I'm wondering if its safe to use the same water in a few days? I have it covered with a black shirt in the closet so no sunlight or any light hits it. Will it be safe to use again in a few days?
In the future I would only mix as much as you need at the time. You can leave water for a day or 2 but it wont hold the ph well
Ahh thanks for the quick reply! Yeah it's not that it's hard for me to get fresh RO water but I hate having to adjust pH with no nutes in the water haha. It's like add a drop, wait, add a drop, wait... But I guess it's worth it.
