Quote Originally Posted by Weedhound
Also I was taught that if you use tap water it usually will provide enough calcim etc..for your plants. I use the Botanicare line myself and was told that with RO water you really need the cal-mag to supplement...again hydro...fyi...
correct - Reverse-Osmosis units remove calcium and magnesium from the water - adding Cal-Mag or Dolomite Lime to the water replaces both, and will adjust the pH while doing so, so be sure to re-test your pH after any additives :smokin:
freewheelinfrank Reviewed by freewheelinfrank on . CalMag and Thrive in bloom... It's my understanding that N should still be fed, albeit in smaller quantities, during bloom but you need to knock it off in the last few weeks. Is this correct? Calmag is rated at 2-0-0 so phasing it out say halfway through bloom would be a good idea? While I'm here, I should also ask if a similar rule exists for hormones a la Superthrive? I hear people mention they use ST all the way until harvest, but I've also picked up that it can actually hinder full errr, fruitilization! :D Rating: 5