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If it drops should I ignore it or is that time I need to do HH flush?? I am flushing the 2 lil ones cuz ph dropped below 6 (5.7/5.8) so doing that today on them! Big ones the ph was down some but was still over 6 on both! I did get up to 377ppm on 1 but other was under 200 again so mixing their nutes separately! I did start the slf100 on the small ones so crust didn’t start to build up so dropped from 6.2 on both to in the 5’s! Is it gonna keep dropping using it?Hh kinda depends on how much your hitting the BK. Not at all, 100 to 200% will probably do it. But, remember your ppm...
I'm sitting now at 150% of the base, 200% DD, 100% AA, 200% HH, Zues 100%... and a couple others that get rotated in and out. Most everything got a bump.
When I start getting a buildup, I'll take a fork just prior to watering, and kinda break the surface up a bit, and then run the slf at 5 ml per gal every feed. Eye on pH, as the slf breaks down the calcium, you may see a drop in the slurry pH.