If my roots looked like that I would be soo happy. Atm I have 1 plant with basically pure brown roots in bucket with ample air stones and just 100ppm calimagic 1ml/gal rapid start and 2 cups tea in 2 gallon water, not directly under lamp.. Both my plants now have water level about 1 to 1 1/2 below net pots.dont be concerned about the color of my surface roots.. those are oxidated and i also have a ppm of 950... so yeah.. lol.. i have taken samples of roots inside and they are much whiter.. these surface roots are also infested with fungi colonies so i accept the color yellow as A okay =) zero slime is visible to the naked eye.. there are fishbone white roots running around the sides.. and also the sheer mass of roots is actually pretty impressive wouldn't you say? that is only the top.. i cant remove the top of the lid since i have a scrog pattern up .. made out of a 1 by 2 and some thick kite rods.. sorry that you kinda have to bend your neck to see the actual bud pics.. i have only been flowering for a few weeks.. =) and i only have 1 400 watt light.. so that tells you what can happen with only a little light.. right?
Every time i use h202 it seems to be hindering the growth, and when i use it in very strong concentrate 50/50 (3%) it seems to like literately kill the bacteria as i see it sizzle but the roots always become super dark and like dead also. The h202 by the way doesnt touch the slime, as i used it before the res change on my good plant with zone and the roots still pretty much look the same, it just hindered the growth a little.
I will add some pics since you did. First plant is bad one that im using the tea in, the other one has Zone, calimagic, and sensi A B. As you can see the where the water level is the roots get dark and kinda stay that way, for some reason the zone only works on things inside the water, like the splashed water from bubbles doesnt seem to work. However everything in the water stay super clean air stone etc. Although when the roots get tangled and thick those area's seem to still get darker and dingy which is why i will prob have to stay with the tea for all next time.
*Also wanted to ask your opinion on my better looking plant. If it was you're plant would you wash off the roots and change it over from the zone to the tea at this point?