looking nice weedhound...when you said you had the one at 1300ppm and boosted the other to 1500ppm, was that just more N-P-K or more cal-mag also?

so ya I think the problem of the low ppm is solved... we are both using around 800ppm for our bloom nutes then you just add 500ppm of cal-mag.


Stinky: Ya i know epsom salt is just for the Mg. GH Micro has 5% calcium, which seems to be standard in most other solutions, so I figued even with the RO process taking it out all I would need to really replace is some Mg since that is low in the nute formula. But I have started to add cal-mag and hope to see some great result :thumbsup:

Ya and I know that my res solution will give me a "false reading" due to the different nutes being uptaken by each individual plant and those left behind. Ya i know all the N-P-K could be used up and I still get a decent reading. I usually have a 5 gal, wait until the plant uses up 3 gal and then replace that with fresh solution. So really I am technically replacing 3/5 of the total solution with good. the rest may be leftover crap but this has always worked for me in the past so I stuck with it.

I should really get into the habit of changing them out on a weekly rate but I an pulling water from a natural spring and ya lets just say its been pretty dry and I gots no water

thanks for all the input to the post. Gave me a better overlook of hydro information I could not find when looking over all the great information.