So far, I'm not seeing where the cal/mag is hurting. I've also added some humic acid which also didn't effect it. I've not yet tested the spring and well water, but expect to here shortly. I'll also have an RO setup in a bit, so should be able to have a more definitive answer then.
I didn't mean to imply adding cal/mag would hurt, just that it's not guaranteed to work. Obviously there's stuff you can add that doesn't throw off the pH Perfect technology's performance, but the only things "guaranteed" to work are in that "Bigger Yields Flowering System" line up (about a dozen additives).
How do you apply the ph perfect line up when using soil im finding hard to find info on people using it with soil most people are using it for hydro anyone give any help ?
To my knowledge it's not guaranteed for soil. I don't grow in soil so I can't speak from experience but I can't think of any reason it wouldn't work as good or better than any other hydroponic nutrient works in soil.
Do you need all the additives to have a perfect ph?
Or can you use the sensi grow and sensi bloom ph perfect and still have perfect ph?
Yeah all you need is the base nutes.
I actually learned something specific to this. According to the guy I talked to on their Tech Support line they're going to be putting out more information on how everything in this new lineup works, but the gist of it is that while yes, you can use just the base nutes they "strongly recommend" you use the base nutes and the Hobbyist Bundle together.
Obviously there's some reason to suspect ulterior motives in that but apparently they designed the system for maximum stability that way. They say that level has the most bang for the buck too.
So my answer would be "yes, but". Yes, the base nutes alone will do what they say they do, but if you add the Hobbyist level you get superior pH stability as well as a HELL of a lot better growth.
my tap water is usually around 200-250 ppm. You think it would be worth using the ph perfect?
AFAIK it's not more expensive to get the pH Perfect nutes so I would say sure, get them. The worst that will happen is your water doesn't allow them to stabilize the pH *as much* as they could with RO water. It'll still be better stabilized than the regular nutes would have been.
Just keep an eye on the pH for awhile and see how it does. Some people's tap water works better than others, it all depends on what specific dissolved solids are pushing your ppm up that high. Some people can't get the pH to stay stable on tap water with 50ppm, others are rock steady at 300ppm or more. The difference is how your local municipal water treatment plant treats the water.