krunch do you mean 1 ml per 10gal? or have you kicked it up a notch to 1ml per gal with no ill effects? 1ml per gal really isnt that much, shit they recommend 1.25ml per gal to purify drinking water
initially to kill the root rot, i used closer to 2 mils per 10 gallons, then maintain the b;each level by adding 1 mil every other day to the res. i have put more with no ill affects, just don't want to recommend any higher strength and have someone plants burn up and blame me....