Never had this problem before...ill ph down to 5.6 then 12 hrs later its at 6.1 or 6.2. Its like the water lost its buffering capabilities. It has only been 1 week since res change in a 15 gal DWC for 2 plants. Whats the deal? Iv added quite a bit of PH down for 3 days now and its the same deal.

I pumped out 4 gals and replaced it with 3 gal RO 1 gal tap...im thinking it has something to do with the salt build up so let me know.

I also used molasses...I recall another grower having the same problem that may have been to to molasses or he seems to think so.

What do I do?

The rez is almost all tap...i top off with RO. PPMS were at 1700 (250 ppm tap)
I dropped them to 1400 and PHed to 5.8
Cyclonite Reviewed by Cyclonite on . Wide PH fluctuations Never had this problem before...ill ph down to 5.6 then 12 hrs later its at 6.1 or 6.2. Its like the water lost its buffering capabilities. It has only been 1 week since res change in a 15 gal DWC for 2 plants. Whats the deal? Iv added quite a bit of PH down for 3 days now and its the same deal. I pumped out 4 gals and replaced it with 3 gal RO 1 gal tap...im thinking it has something to do with the salt build up so let me know. I also used molasses...I recall another grower having the Rating: 5