MedicalBible
Member
Hi I am a newbie to growing but a friend of mine said if the CF of the res goes up then the plants need to be flushed as they have locked out but I read somewhere else that plants drink more water than nutrients anyway so it will rise sometimes.
Does the res just need to be topped up with water when the CF rises or is my friend right in saying the plants need to be flushed when the CF rises as they have locked up?
Thanks for your help
Does the res just need to be topped up with water when the CF rises or is my friend right in saying the plants need to be flushed when the CF rises as they have locked up?
Thanks for your help