You use them but do so seperately, adding one fert with water, then the other mixed with water. You don't want to mix calcium and phosphorus together because the cal and P will bind together and become useless. Put them in the soil but do so seperately, or I suppose you can mix in the same water but don't mix them together without water. Don't mix them in water and them set it aside as the longer the calcium and P are together, the greater chance they will mix and become useless.
polishpollack Reviewed by polishpollack on . Is this n deficiency or just need feeding ?? NEED YOUR HELP PLZ!!! Hi , Could this be N deficiency? Or maybee just needs feeding ?, my plants are 3weeks old today from cutting's , I planted into plagron growmix with perlite which is meant to keep plants feed for 3 to 4 weeks ,. My plants have been drooping every day towards the end of the light session and then after 6 hours of night they are up and ready to go !!(i presume they are resting , as im a noob i dnt really know only from what i have read),. But today i put the light on and they Rating: 5