Did you read the OP? I posted pics of clear CS, and of a treated plant, in the OP. Amber works fine, but clear works as well, and has smaller particles. The plant in the OP was actually treated with amber CS, just to see if it would work, and it does, but I wouldn't aim for that. It isn't necessary to let it run so long that it turns amber or grey. It works perfectly, when it's clear, and doesn't have large particles, so there should be less buildup on the plant's surfaces, and more buildup within the plant's tissues. The only reason it was amber, is because I hadn't added an air stone to my generator, when that batch was made, and the particles agglomerated more than they do when the water is kept moving with the bubbles. So far, pretty much everyone who has followed my guide, has had great success. That means your particles are larger than they would be in a clear suspension. It very well might work just fine for your plant reversal purposes, but you didn't have to leave it so long. Were you not using an air stone, or not cleaning your electrodes often?