Is it from pH fluctuations? too high pH, or too low?

I don't live near any hydroponic shops and really don't have money for florakleen..

Is there anything I could do besides using florakleen?
Illusion Reviewed by Illusion on . Progress? I've noticed that the very tippy tip tips of the roots are kind of shriveling and turning brown, besides that they look nice and happy. I would love to know how old these are. I know they are well over a month old. Have I stumbled upon the world's slowest growing strains? Overall, for those of you who remember the pictures from my last post- How is my progress? PH Drifts from 5.5 - 6.1 I haven't added any more nutrients in the past week. I had it around 250, and It's raised to 320! Rating: 5