N0fun

<span class="link_user">@N0fun</span>, ah yes, PK is Phospor and potassium from the NPK. NPK is the nutrients you&#039;re giving it, usually on the label they&#039;ll tell you what&#039;s inside like this NPK 4-2-2 (veg) or 2-4-4 (flower), a PK boost is NPK 0-4-4 something like that ... the numbers are less important than the ratio . http://www.canna-uk.com/pk_13_14 i dont sell this stuff but i use it lol ... so you just add this to your regular feed, you shouldnt need to change anything. (if you do, add some cal mag, it&#039;s late but you need it kinda - never grow without it from now on) sounds complicated , but it&#039;s very simple, hope this helps ! :rocket:

<span class="link_user">@CRiSPrGrow</span>, Thank you very much .. this is very helpful. I have just a noob question : How i should add some PK ? what is the preferred method at this point?