I took my 25 year old (4 feet high) cactus' to Platt Hill to be repotted. The pro there argued when I said to use cactus soil stating that they need nutrients etc. Well, my cactus are dying of root rot. I just spent the past hour repotting myself in the hopes I can bring it back to life. Very disappointed...after all these years and now it might be too late. Thanks Platt. Not only did you charge me a pretty penny (which I thought at the time was worth it cuz your are the "pro's) but you probably killed my plant.