When they're referring to soil and it's PH, they're referring to the soil from your backyard during an 'Outdoor Grow' operation.
Products like pearlite, pumice, sand, coco, peat moss, and any combination of these products are considered 'Soil Less' Therefore you follow the PH of a Hydro garden
i use sunshine mix #4 i think its a soilless soil lol i think thats how u call it. ive looked it up before and it is soilless. i seen in the grow faq it says soil and soilless should be around 6. but i also heard bout what ur saying too ochack. so what do u think?
and also do i focus on the ph of the water im feeding it or the run off? because i do put in nutes and water in my res and make sure the ph is at 6 but i checked run off and it is lower. should i make it so the run off is 6? or is it ok?
ummm...soil is self balancing ...i use power flower + allot of coco and perlite and that's it......have never need to ph....... I use a flood drain or ebb and flow what ever ......
ph the water your giving them, ph of water will change as plants drink. avoid going above 6.5. if its an ebb and flow your run off drains back to your rez right? just ph your rez