I'm going hydro for the first time and I am confused about salt build up and PPM levels. I'm using a small pvc ebb and flow system with a 6 gal tub. My clones are still fairly small and look fine. My question is when do I start to get concerned about salt build up? I'm sitting at a PPM of 775 and keeping the PH between 5.75 and 6.25 (usually right at 6). Is the PPMs the only indication of salt build up I have to keep an eye on? If so, when do I start getting freaked out about it? I've had the same water for about 3 weeks and only had to add a couple of gal. Right now I'm using Sensi Bloom A + B. Also, when do I start adding the Bloom? They have only been under 12/12 for 2 weeks. Any help would be appreciated.
Steelwool Reviewed by Steelwool on . 1st timer hydro with PPM vs. salts ???s I'm going hydro for the first time and I am confused about salt build up and PPM levels. I'm using a small pvc ebb and flow system with a 6 gal tub. My clones are still fairly small and look fine. My question is when do I start to get concerned about salt build up? I'm sitting at a PPM of 775 and keeping the PH between 5.75 and 6.25 (usually right at 6). Is the PPMs the only indication of salt build up I have to keep an eye on? If so, when do I start getting freaked out about it? I've Rating: 5