SEVERAL FAILED ATTEMPTS IN S/H.

[lorenaguti]

Hello again , I watering my phal in S / H with fertilizer this past Sunday, then note that the root that was heading towards the water reservoir the green tip became a little black , then today when I got home take off carefully because it has like 5 new roots growing fast but this is the longest ( new root) and the growth is stopped and black around the tip , which can be ? ? .
I need advice from experienced people , and also note at the base of phal ones red-orange color littLe balls half millimeter or less in diameter approximately , I am very scared, what are the little balls??? .
My regimen fertilization is: every sundays watering with fertilizer as I do that I have to bark for 20-30 minutes , let drain the water and just leave a little in the reservoir, in a previous watering I used kelpmax is the only different thing I did, I always use better gro 20-14-13 and only 1 drop superthive, when I use superthrive don't use kelpmax. One time in the month I use kelpmax, every 2 week I let to fhush water, and use tap water, never have problem...
I dont understand what happened?, and I want to know what are the little balls?...After checked I put the phal for ten minutes in water with physan 20 and put back in S/H...I hope so the pictures help..., I greatly appreciate answers...

[ALToronto]

I bet your fertilizer is 10 times stronger than it should be. Black root tips are a sign of chemical damage. Use the calculator on Ray's site to figure out how much to use for 20 ppm N. You'll be surprised how little you need - and how much you've been using.

[lorenaguti]

Originally Posted by ALToronto

I bet your fertilizer is 10 times stronger than it should be. Black root tips are a sign of chemical damage. Use the calculator on Ray's site to figure out how much to use for 20 ppm N. You'll be surprised how little you need - and how much you've been using.

Thank you so much, im gonna check Ray's site now, thanks again...LORENA