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02-24-2010, 05:35 AM #1
Senior Member
If you use RO or distilled water you NEED CalMag Plus
No, pH must always be monitored. Distilled water/RO water especially so, because there's less stuff initially present to act as a buffer.
Originally Posted by Chebus
I use the GH liquid pH tester kit. Not the most accurate thing to try to judge but it works if you've got decent light to judge color by.khyberkitsune Reviewed by khyberkitsune on . If you use RO or distilled water you NEED CalMag Plus That's all. My fingers were cramping from typing it n times a day. Rating: 5My (defective) Micro SWC 50W LED Grow
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