Increasing the PPM Question

Hi all. I was wondering how does a person turn around and increase the PPM/TDS in their hydroponics system?

My AeroGarden is sitting at... 700PPM @ 6.5PH. I found a site where some herbs like the PPM to be over 1000. I am growing only organic so I have to watch what I put into it.

dissolved epsom salt should do it? Don't quote me on that though

The Outdoorsman said:

dissolved epsom salt should do it? Don't quote me on that though

Click to expand...

I've thought about doing that but it will mess with the Meg levels in the water sadly.