 One of the main sources of confusion on sites like this, is that different styles of growing sometimes require totally different techniques. What works in coco doesn't necessarily apply to soil (especially in terms of watering and fertigation.) You can get a ton of conflicting info where a soil grower tells you to throw your pH pen in the trash and a hydrophobic grower insist you need to measure pH religious. Both are right for their setups. I grow organic, outdoor in dirt. I have no reason to test my water pH or runoff EC (as neither are relevant in my grow). The Farm is head and shoulders above most of the bro-science dick swinging sites out there. Read through a couple of the grow journals with similar setups and you'll find a lot of good info. 